CVE-2026-42533: NGINX Map directive and Regex matching vulnerability
Overview
- Severity
- High (CVSS 8.1)
- CVSS Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Jul
- Released
- 2026-07-19
- EPSS Score
- 0.83% (percentile: 53.5%)
Detection & Weaponization (1 sources)
Maturity: Exploit
- GitHub PoC: 3 repositories
Affected Products (1)
Open Source Software
- azl3 nginx 1.28.3-6 on Azure Linux 3.0
Revision History
- 2026-07-19: Information published.