{"id":"CVE-2025-55182","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-55182","generatedAt":"2026-10-31T05:59:58.378Z","title":"Meta React Server Components Remote Code Execution Vulnerability","description":"A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.","published":"2025-12-03T16:15:56.000Z","lastModified":"2026-10-18T17:10:00.000Z","status":"Analyzed","sourceIdentifier":"cve-assign@fb.com","cvss":{"version":"3.1","score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-502"],"affected":["facebook/react","vercel/next.js"],"epss":{"score":0.99802,"percentile":0.99958,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2025-12-05","dueDate":"2025-12-12","knownRansomwareCampaignUse":"Known","notes":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.\nCheck 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"},"exploits":{"count":1,"verified":false,"firstPublished":"2026-04-09","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52506,"kind":"exploit","title":"React Server 19.2.0 - Remote Code Execution","url":"https://www.exploit-db.com/exploits/52506","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/52506.py","file":"exploits/multiple/webapps/52506.py","published":"2026-04-09","added":"2026-04-09","updated":"2026-04-09","author":"danieljavanrad","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2025-55182"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 12 December 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components","tags":["Patch","Vendor Advisory"],"source":"cve-assign@fb.com"},{"url":"https://www.facebook.com/security/advisories/cve-2025-55182","tags":["Vendor Advisory"],"source":"cve-assign@fb.com"},{"url":"http://www.openwall.com/lists/oss-security/2025/12/03/4","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://news.ycombinator.com/item?id=46136026","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/","tags":["Third Party Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-55182","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}