CVE-2025-55182
critical · 10Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
A public exploit / detection template exists
Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| react | 19.0.0 | |
| react | 19.1.0 | |
| react | 19.1.1 | |
| react | 19.2.0 | |
| vercel | next.js | >= 15.0.0, < 15.0.5 |
| vercel | next.js | >= 15.1.0, < 15.1.9 |
| vercel | next.js | >= 15.2.0, < 15.2.6 |
| vercel | next.js | >= 15.3.0, < 15.3.6 |
| vercel | next.js | >= 15.4.0, < 15.4.8 |
| vercel | next.js | >= 15.5.0, < 15.5.7 |
| vercel | next.js | >= 16.0.0, < 16.0.7 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 14.3.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
| vercel | next.js | 15.6.0 |
Check a specific version with /api/v1/cve/match.
References
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
- https://www.facebook.com/security/advisories/cve-2025-55182
- http://www.openwall.com/lists/oss-security/2025/12/03/4
- https://news.ycombinator.com/item?id=46136026
- https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2025-55182