CVE-2026-42530: Nginx 1.30.2 and Nginx 1.31.2
CVE-2026-42530 is a security vulnerability affecting Nginx versions 1.30.2 and 1.31.2, as recorded in the CVE database. Details of the flaw are documented in the official CVE entry.
Background
CVE (Common Vulnerabilities and Exposures) entries are public disclosures of security flaws, each with a unique ID. This record reports a vulnerability in Nginx, a widely used open-source web server, reverse proxy, and load balancer that powers a large portion of the internet. The flaw affects Nginx versions 1.30.2 and 1.31.2 — these are the latest stable and mainline releases at the time of disclosure. The specific vulnerability (CVE-2026-42530) has been reserved, meaning the details are not yet public (common practice to allow users time to patch before attackers learn the exploit method). Organizations running these Nginx versions should monitor the official Nginx security advisories for the patch release and apply it promptly.