Description
Next.js is a React framework for building full-stack web applications. From to before 15.5.16 and 16.2.5, applications using Partial Prerendering through the Cache Components feature can be vulnerable to connection exhaustion through crafted POST requests to a server action. In affected configurations, a malicious request can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity until legitimate users are denied service. This vulnerability is fixed in 15.5.16 and 16.2.5.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
vercel next.js
>= 16.0.0, < 16.2.5affected>= 15.0.0, < 15.5.16affected
References
- https://github.com/vercel/next.js/security/advisories/GHSA-mg66-mrh9-m8jx ↗
- https://access.redhat.com/security/cve/CVE-2026-44579 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2477193 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44579.json ↗
- https://access.redhat.com/errata/RHSA-2026:40974 ↗
- https://access.redhat.com/errata/RHSA-2026:37272 ↗
- https://access.redhat.com/errata/RHSA-2026:34608 ↗
- https://access.redhat.com/errata/RHSA-2026:54435 ↗