What is RHSA-2026:20351?

RHSA-2026:20351 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Which CVE IDs does RHSA-2026:20351 cover?

RHSA-2026:20351 covers the following CVE IDs: CVE-2026-9256, CVE-2026-40460. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:20351?

RHSA-2026:20351 has a CVSS v3 base score of 8.1, published by Red Hat Product Security.

RHSA-2026:20351HighCVSS 8.1

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Vendor

Red Hat Product Security

Published

May 23, 2026

Last Modified

June 18, 2026

🔗 CVE IDs covered (2)

CVE-2026-9256 →CVE-2026-40460 →

📋 Description

CVE-2026-9256 — nginx: ngx_http_rewrite_module: code execution and denial of service CVE-2026-40460 — nginx: NGINX: Authorization bypass via IP spoofing in HTTP/3 QUIC module

🔗 References (8)

selfhttps://access.redhat.com/errata/RHSA-2026:20351
externalhttps://images.redhat.com/
externalhttps://access.redhat.com/security/cve/CVE-2026-40460
externalhttps://access.redhat.com/security/updates/classification/
externalhttps://access.redhat.com/security/cve/CVE-2026-42926
externalhttps://access.redhat.com/security/cve/CVE-2026-9256
externalhttps://access.redhat.com/security/cve/CVE-2026-42530
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_20351.json