Advisory severityMedium5.3Vendor: LowRed Hat Linux

Medium [CVE-2026-59980] Denial of Service via malformed HTTP/2 header encoding

This medium-severity Red Hat Linux advisory covers CVE-2026-59980; related products: Migration Toolkit for Containers, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI).

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-59980 Source published Sep 23, 2026Source updated Sep 23, 2026

VulniPulse record published Sep 24, 2026Record updated Sep 29, 2026

CVE-2026-59980

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Summary

Denial of Service via malformed HTTP/2 header encoding. Red Hat rates this low (CVSS 5.3).

Weakness: CWE-770.

Affected products named by the advisory: Migration Toolkit for Containers; Red Hat Ansible Automation Platform 2; Red Hat OpenShift AI (RHOAI); Red Hat OpenStack Platform 17.1; and 1 more.

Affected products named by the advisory: Red Hat OpenStack Platform 18.0.

Affected versions

< 4.2.0

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Sanitize input to hpack decoder for long sequences of `0xFF` values to prevent malicious use.

Official advisory · high-confidence parse· fetched 9 days ago·verify at source

Discussion(0)

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