CVE-2026-21863
CVE-2026-21863: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-21863] Denial of Service via invalid clusterbus packet
CVE-2026-21863Source published
Denial of Service via invalid clusterbus packet. Red Hat rates this important (CVSS 7.5). Weakness: CWE-125. Affected package(s): valkey, valkey-main. Resolved in Red Hat advisory RHSA-2026:3507 — update the affected packages (`sudo dnf update`).
- Affected products in this advisory
- Red Hat Enterprise Linux 10.0 Extended Update Support
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Source-reported affected versions
- valkey-0:8.0.7-1.el9_7
- valkey-main-9.0.3-1.2.hum1
- valkey-0:8.0.7-1.el10_0
- valkey-0:8.0.7-1.el10_1
- Source-reported fixed versions
- RHSA-2026:3507
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:3507 (`sudo dnf update` / `yum update`).
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