Description
Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code. Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Meta react-server-dom-webpack
Default version status: unaffected
19.0.0 to < 19.0.4affected19.1.0 to < 19.1.5affected19.2.0 to < 19.2.4affected
Meta react-server-dom-turbopack
Default version status: unaffected
19.0.0 to < 19.0.4affected19.1.0 to < 19.1.5affected19.2.0 to < 19.2.4affected
Meta react-server-dom-parcel
Default version status: unaffected
19.0.0 to < 19.0.4affected19.1.0 to < 19.1.5affected19.2.0 to < 19.2.4affected
References
- https://www.facebook.com/security/advisories/cve-2026-23864 ↗
- https://access.redhat.com/security/cve/CVE-2026-23864 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2433059 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23864.json ↗
- https://access.redhat.com/errata/RHSA-2026:34608 ↗
- https://access.redhat.com/errata/RHSA-2026:13571 ↗