Critical NGINX Vulnerability CVE-2026-42945 Exposes Millions to RCE and DoS Attacks

## Critical NGINX vulnerability CVE-2026-42945: urgent patching required A heap-based buffer overflow in NGINX's ngx_http_rewrite_module (CVE-2026-42945) allows unauthenticated remote code execution and server crashes across versions 0.6.27–1.30.0; the flaw has a high CVSS score (~9.2), has existed for 18 years, and public proof-of-concept exploits are circulating, so organizations should apply emergency patches immediately—especially internet-facing servers with complex rewrite rules.