CVE-2026-42945: NGINX ngx_http_rewrite_module 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-May

Released

2026-05-16

EPSS Score

0.17% (percentile: 37.9%)

Detection & Weaponization (1 sources)

Maturity: Exploit

• GitHub PoC: 16 repositories

Affected Products (1)

Other

• 21341-17084

Revision History

• 2026-05-16: Information published.