CVE-2025-55182
Last modified
CVE-2025-55182 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.62% chance of exploitation in the next 30 days.
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.
Metrics
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| 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 | Canary77 |
| Vercel | Next.Js | 15.6.0 | — |
| Vercel | Next.Js | 16.0.0 | — |
References
- https://www.facebook.com/security/advisories/cve-2025-55182Vendor Advisory
- https://www.openwall.com/lists/oss-security/2025/12/03/4Mailing List, Patch, Third Party Advisory
- https://news.ycombinator.com/item?id=46136026Issue Tracking
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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