{"id":"CVE-2025-55182","aliases":["GHSA-fv66-9v8q-g76r"],"url":"https://o3.security/vulnerability/CVE-2025-55182","summary":"React Server Components are Vulnerable to RCE","details":"### Impact\n\nThere is an unauthenticated remote code execution vulnerability in React Server Components.\n\nWe recommend upgrading immediately.\n\nThe vulnerability is present in versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 of:\n* [react-server-dom-webpack](https://www.npmjs.com/package/react-server-dom-webpack)\n* [react-server-dom-parcel](https://www.npmjs.com/package/react-server-dom-parcel)\n* [react-server-dom-turbopack](https://www.npmjs.com/package/react-server-dom-turbopack?activeTab=readme)\n\n### Patches\n\nA fix was introduced in versions [19.0.1](https://github.com/facebook/react/releases/tag/v19.0.1), [19.1.2](https://github.com/facebook/react/releases/tag/v19.1.2), and [19.2.1](https://github.com/facebook/react/releases/tag/v19.2.1). If you are using any of the above packages please upgrade to any of the fixed versions immediately.\n\nIf your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability.\n\n### References\n\nSee the [blog post](https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components) for more information and upgrade instructions.","published":"2025-12-03T16:15:56.463Z","modified":"2026-10-24T10:30:28.975549294Z","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.99802,"percentile":0.99957,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":116,"affectedPackages":[{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.0.1"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.1.2"},{"ecosystem":"npm","name":"react-server-dom-webpack","fixedVersion":"19.2.1"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.0.1"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.1.2"},{"ecosystem":"npm","name":"react-server-dom-turbopack","fixedVersion":"19.2.1"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.0.1"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.1.2"},{"ecosystem":"npm","name":"react-server-dom-parcel","fixedVersion":"19.2.1"}],"fix":{"url":"https://github.com/facebook/react/pull/35277","label":"facebook/react#35277"},"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182"},{"type":"ADVISORY","url":"https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/"},{"type":"ADVISORY","url":"https://www.facebook.com/security/advisories/cve-2025-55182"},{"type":"REPORT","url":"https://news.ycombinator.com/item?id=46136026"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2025/12/03/4"},{"type":"FIX","url":"https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components"},{"type":"WEB","url":"https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55182"},{"type":"WEB","url":"https://github.com/facebook/react/pull/35277"},{"type":"WEB","url":"https://github.com/facebook/react/commit/7dc903cd29dac55efb4424853fd0442fef3a8700"},{"type":"WEB","url":"https://github.com/ejpir/CVE-2025-55182-poc"},{"type":"PACKAGE","url":"https://github.com/facebook/react"},{"type":"WEB","url":"https://github.com/facebook/react/releases/tag/v19.0.1"},{"type":"WEB","url":"https://github.com/facebook/react/releases/tag/v19.1.2"},{"type":"WEB","url":"https://github.com/facebook/react/releases/tag/v19.2.1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:28.975549294Z"}}