---
title: "CVE-2025-67489: @vitejs/plugin-rsc Remote Code Execution through unsafe dynamic imports in RSC server function APIs on development server"
url: https://erroneo.us/security/cve/CVE-2025-67489/
description: "CVE-2025-67489 (@vitejs/plugin-rsc (npm)): @vitejs/plugin-rs provides React Server Components (RSC) support for Vite. Versions 0.5.5 and below are…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-12-09
date_modified: 2025-12-10
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-67489"
kev: false
cvss: 9.8
epss: 0.00814
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-67489: @vitejs/plugin-rsc Remote Code Execution through unsafe dynamic imports in RSC server function APIs on development server

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.8% , percentile 57: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 57% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes @vitejs/plugin-rsc (npm) <= 0.5.5, fixed in 0.5.6 . Check your lockfile, including transitive dependencies.

## What it is

@vitejs/plugin-rs provides React Server Components (RSC) support for Vite. Versions 0.5.5 and below are vulnerable to arbitrary remote code execution on the development server through unsafe dynamic imports in server function APIs (loadServerAction, decodeReply, decodeAction) when integrated into RSC applications that expose server function endpoints. Attackers with network access to the development server can read/modify files, exfiltrate sensitive data (source code, environment variables, credentials), or pivot to other internal services. While this affects development servers only, the risk increases when using vite --host to expose the server on all network interfaces. This issue is fixed in version 0.5.6.

## Affected packages

- npm `@vitejs/plugin-rsc` <= 0.5.5 → fixed: 0.5.6

## Affected products (CVE record)

- vitejs vite-plugin-react: < 0.5.6

## Severity

- GitHub_M CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.81% probability of exploitation activity in the next 30 days; percentile 57.

## Sources

- [GitHub Advisory GHSA-j76j-5p5g-9wfr](https://github.com/advisories/GHSA-j76j-5p5g-9wfr)
- [CVE.org record CVE-2025-67489](https://www.cve.org/CVERecord?id=CVE-2025-67489)
- [NVD entry CVE-2025-67489](https://nvd.nist.gov/vuln/detail/CVE-2025-67489)
- [github.com](https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-j76j-5p5g-9wfr)
- [github.com](https://github.com/vitejs/vite-plugin-react/commit/fe634b58210d0a4a146a7faae56cd71af3bb9af4)

---
Source page: https://erroneo.us/security/cve/CVE-2025-67489/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt