@vitejs/plugin-rsc has an Arbitrary File Read via /__vite_rsc_findSourceMapURL Endpoint

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

• CVE-2025-68155: 0.50% estimated exploitation activity in the next 30 days; percentile 43.05 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The /viterscfindSourceMapURL endpoint in @vitejs/plugin-rsc allows unauthenticated arbitrary file read during development mode. An attacker can read any file accessible to the Node.js process by sending a crafted HTTP request with a file:// URL in the filename query parameter. Severity: High Attack Vector: Network Privileges Required: None Scope: Development mode only (vite dev) --- Impact Who Is Affected? - All developers using @vitejs/plugin-rsc during development - Projects running vite dev with the RSC plugin enabled Attack Scenarios 1. Network-Exposed Dev Servers: When developers run vite --host 0.0.0.0 (common for mobile testing), attackers on the same network can read files. 2. ~XSS-Based Attacks:~ ~If the application has an XSS vulnerability, malicious JavaScript can fetch sensitive files and exfiltrate them.~ 3. ~Malicious Dependencies: ~ ~A compromised npm package could include code that reads files during development.~ 4. ~DNS Rebinding:~ (EDIT: This doesn't apply…

Published by the source

16 Dec 2025, 22:32 UTC

Last modified by the source

16 Dec 2025, 22:55 UTC

Source last checked

26 Oct 2026, 12:41 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-g239-q96q-x4qm

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-g239-q96q-x4qm

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# Patch Next advisory brief: CVE-2025-68155

Advisory: @vitejs/plugin-rsc has an Arbitrary File Read via `/__vite_rsc_findSourceMapURL` Endpoint
IDs: CVE-2025-68155, GHSA-g239-q96q-x4qm
Record: https://patchnext.com/advisories/cve-2025-68155 (revision 2, source checked 26 Oct 2026, 12:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @vitejs/plugin-rsc 0.5.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @vitejs/plugin-rsc: affected < 0.5.8; fixed in 0.5.8

## Suggested inspection (read-only)
- `npm ls @vitejs/plugin-rsc --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @vitejs/plugin-rsc.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-g239-q96q-x4qm (OSV record GHSA-g239-q96q-x4qm lists affected ranges: npm @vitejs/plugin-rsc >=0 <0.5.8 (fixed))
- Verified: https://github.com/advisories/GHSA-g239-q96q-x4qm (GitHub-reviewed advisory GHSA-g239-q96q-x4qm lists affected ranges: npm @vitejs/plugin-rsc >=0 <0.5.8)

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