7.5High

CVE-2026-44579Next.js: Denial of Service via connection exhaustion in applications using Cache Components

vercel next.js; Red Hat Streams for Apache Kafka 2.9.4; Red Hat Red Hat Trusted Artifact Signer 1.3; Red Hat Red Hat Trusted Artifact Signer 1.4 Published: (6 months ago)

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.

Weakness (CWE): CWE-770CWE-833

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

CPE matches (NVD) (2)

  • cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* ≥ 15.0.0 < 15.5.16
  • cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* ≥ 16.0.0 < 16.2.5