Vulnerability in Meta React-server-dom-parcel
CVE-2026-23869
A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5…
EPSS: 0.008 (75.1th 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
- Meta React-server-dom-parcel — versions 19.0.0, 19.1.0, 19.2.0
- Meta React-server-dom-turbopack — versions 19.0.0, 19.1.0, 19.2.0
- Meta React-server-dom-webpack — versions 19.0.0, 19.1.0, 19.2.0
Public proof-of-concept exploits
References
- github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-23869?
- CVE-2026-23869 is a high-severity vulnerability in Meta React-server-dom-parcel. CVSS score: 7.5/10. Published 2026-04-08.
- How severe is CVE-2026-23869?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-23869 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.