Deserialization in Facebook React
CVE-2025-67779
It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allo…
Vulnerability class: Insecure Deserialization
EPSS: 0.192 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Facebook React — versions 19.0.2, 19.1.3, 19.2.2
- Meta React-server-dom-parcel — versions 19.0.2, 19.1.3, 19.2.2
- Meta React-server-dom-turbopack — versions 19.0.2, 19.1.3, 19.2.2
- Meta React-server-dom-webpack — versions 19.0.2, 19.1.3, 19.2.2
- Vercel Next.js — versions 15.6.0, 16.1.0
Weakness classification (CWE)
References
- cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)
- cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-67779?
- CVE-2025-67779 is a high-severity vulnerability in Facebook React, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2025-12-12.
- How severe is CVE-2025-67779?
- High severity. CVSS v3 base score is 7.5 out of 10.