CVE-2026-42055 - Vulnerability Details

Related Threat Clusters

• F5 Issues Critical Patches for NGINX Vulnerabilities Allowing Remote Code Execution

  On June 17, 2026, F5 released emergency patches for two critical vulnerabilities in NGINX, CVE-2026-42530 and CVE-2026-42055. These vulnerabilities affect NGINX Open Source, NGINX Plus, and related products, allowing…

  24 articles · Updated June 18, 2026
• Critical NGINX Vulnerability CVE-2026-42533 Poses RCE and DoS Risks

  F5 disclosed a critical vulnerability in NGINX, identified as CVE-2026-42533, which can lead to remote code execution (RCE) and denial-of-service (DoS) attacks. The flaw is a heap buffer overflow triggered by crafted…

  27 articles · Updated July 16, 2026
• Critical CVE Fixes Released for Fedora Nginx Modules

  On June 17, 2026, multiple critical vulnerabilities (CVE-2026-42055, CVE-2026-42530, CVE-2026-48142) affecting Fedora's Nginx modules were disclosed. These vulnerabilities allow for potential remote code execution and…

  15 articles · Updated June 27, 2026

Recent Intelligence Reports

• Security Advisories — nginx.org · July 20, 2026
• Fedora 44 nginx-mod-brotli Important Fix for CVE-2026-42055 2026 — Linuxsecurity · June 27, 2026
• Fedora 44 nginx-mod-modsecurity Update Fixes CVE-2026-42055 2026 — Linuxsecurity · June 27, 2026
• Fedora 44 nginx-mod-vts Important Rebuild for CVE-2026 — Linuxsecurity · June 27, 2026
• Fedora 44 nginx-mod-js — Linuxsecurity · June 27, 2026
• Fedora 44 nginx-mod-fancyindex Critical CVE Fix Advisory 2026 — Linuxsecurity · June 27, 2026
• Fedora 44 nginx-mod-headers-more Patch CVE-2026 — Linuxsecurity · June 27, 2026
• Fedora 44 nginx-mod-naxsi Security Patch FEDORA-2026 — Linuxsecurity · June 27, 2026

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