Meta React Server Components Remote Code Execution Vulnerability
Check for signs of potential compromise on all internet accessible REACT instances after applying mitigations. For more information, please see: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components ; https://github.com/vercel-labs/fix-react2shell-next?tab=readme-ov-file ; https://nvd.nist.gov/vuln/detail/CVE-2025-55182
Affected packages
No package-level mapping for this advisory.
Exploit signal
- Known exploited (CISA KEV)
- Yes
- EPSS score
- 99.62%
- EPSS percentile
- 99.9%
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 100%.
Sources
No external sources available.
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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