CVE-2026-42533

CVE-2026-42533 — nginx two-pass capture clobbering Pre-auth heap overflow + info leak in nginx 0.9.6–1.30.3 / mainline ≤1.31.2 complex-value script engine; CVSS 9.2. Two trigger surfaces share the same root cause: HTTP regex location + regex map and stream sslpreread + SNI + regex map. In-depth...

CVE-2026-42533-nginx

CVE-2026-42533 nginx This repository contains a Go-based scanner for identifying nginx configuration patterns associated with the complexvalue two-pass capture-clobbering issue described in CVE-2026-42533. Overview The tool analyzes nginx configuration files and directories to detect risky...

ghostlock-vagrant-box

Full Chain Vulnerability Testbed: Nginx RCE → GhostLock LPE Overview This repository provides a Vagrant environment designed to demonstrate a complete two-stage exploitation chain. The testbed automatically provisions an isolated Ubuntu 22.04 LTS virtual machine that is intentionally configured t...

CVE-2026-42533-Config-Scanner

nginx capture-clobber scanner A read-only static scanner that flags nginx configurations vulnerable to the complexvalue two-pass capture-clobbering bug class F5/nginx SIRT advisory, July 2026. It parses your config and reports the vulnerable pattern with the reason and location. It does not explo...

CVE-2026-42533

CVE-2026-42533 — nginx map/regex capture clobbering tracking site Source for the CVE-2026-42533 patch-status tracker: a single-page site recording which distributions have shipped a fix for the nginx map/regex capture-clobbering heap overflow. Where the facts live Everything about the bug —...

nginx 1.29.2 Configuration Scanner

A proof of concept scanner for nginx version 1.29.2 configuration patterns associated with CVE-2026-42533. Rather than exploiting the vulnerability, the Go-based tool recursively analyzes nginx configuration files for risky combinations of regular expression captures and map variables that may...