What is RHSA-2026:8753?

RHSA-2026:8753 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-2026:8753 cover?

RHSA-2026:8753 covers the following CVE IDs: CVE-2026-21863. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:8753?

RHSA-2026:8753 has a CVSS v3 base score of 7.5, published by Red Hat Product Security.

RHSA-2026:8753HighCVSS 7.5

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

Vendor

Red Hat Product Security

Published

April 17, 2026

Last Modified

June 27, 2026

🔗 CVE IDs covered (1)

CVE-2026-21863 →

📋 Description

CVE-2026-21863 — valkey: Valkey: Denial of Service via invalid clusterbus packet

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2026:8753
externalhttps://images.redhat.com/
externalhttps://access.redhat.com/security/cve/CVE-2026-21863
externalhttps://access.redhat.com/security/updates/classification/
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_8753.json