{"cvss":0.0,"datePublished":"2025-12-05","dateUpdated":"2025-12-05","description":"Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182.","dueDate":"2025-12-12","id":"CVE-2025-55182","kev_catalogs":["cisa"],"knownRansomwareCampaignUse":"Known","notes":"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","product":"React Server Components","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","severity":"CRITICAL","source":"cisa_known_exploited","title":"Meta React Server Components Remote Code Execution Vulnerability","vendor":"Meta"}