CVE-2025-55182A 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…
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It affects Meta react-server-dom-webpack and 4 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Dec 5, 2025; federal agencies had to remediate by Dec 12, 2025, and it is known to be used in ransomware. Treat that date as your deadline.
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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.
- CVSS
- 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-502
- Known exploited
- Added to CISA KEV Dec 5, 2025; federal remediation due Dec 12, 2025; known ransomware useApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 99.80% (percentile 100)
- Assigned by
- Meta
- NVD analysis
- Analyzed
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Meta react-server-dom-webpack meta:react_server_dom_webpack (from the name) | from 19.0.0 through 19.0.0; from 19.1.0 through 19.1.1; from 19.2.0 through 19.2.0 | CNA record |
Meta react-server-dom-turbopack meta:react_server_dom_turbopack (from the name) | from 19.0.0 through 19.0.0; from 19.1.0 through 19.1.1; from 19.2.0 through 19.2.0 | CNA record |
Meta react-server-dom-parcel meta:react_server_dom_parcel (from the name) | from 19.0.0 through 19.0.0; from 19.1.0 through 19.1.1; from 19.2.0 through 19.2.0 | CNA record |
facebook react facebook:react | 19.0.0; 19.1.0; 19.1.1; 19.2.0 | NVD |
vercel next.js vercel:next.js | from 15.0.0 before 15.0.5; from 15.1.0 before 15.1.9; from 15.2.0 before 15.2.6; from 15.3.0 before 15.3.6; from 15.4.0 before 15.4.8; from 15.5.0 before 15.5.7; from 16.0.0 before 16.0.7; 14.3.0; and 70 more ranges | NVD |
References
- https://www.facebook.com/security/advisories/cve-2025-55182x-refsource-confirm, vendor-advisory
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-componentsx-refsource-confirm, patch, vendor-advisory
- http://www.openwall.com/lists/oss-security/2025/12/03/4mailing-list, patch, third-party-advisory
- https://news.ycombinator.com/item?id=46136026issue-tracking
- https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.