Advisory severityMedium4.8Red Hat Linux

Medium [CVE-2026-86472] Security bypass due to inconsistent host case normalization

This medium-severity Red Hat Linux advisory covers CVE-2026-86472; related products: Red Hat Hardened Images, Cost Management On Premise, Migration Toolkit for Applications 8.

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

CVE-2026-86472 Source published Sep 15, 2026Source updated Sep 15, 2026

VulniPulse record published Sep 16, 2026Record updated Sep 26, 2026

CVE-2026-86472

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Summary

Security bypass due to inconsistent host case normalization. Red Hat rates this moderate (CVSS 4.8).

Weakness: CWE-178. Red Hat lists fixing advisory RHSA-2026:71040 with package grafana12-4-main-12.4.10-0.4.hum1, grafana13-2-main-13.2.1-0.7.hum1, grafana13-1-main-13.1.6-0.3.hum1.

Affected products named by the advisory: Red Hat Hardened Images; Cost Management On Premise; Migration Toolkit for Applications 8; Migration Toolkit for Containers; and 32 more.

Affected products named by the advisory: Multicluster Engine for Kubernetes; Network Observability Operator; OpenShift Lightspeed; OpenShift Pipelines; and 28 more.

Affected versions

< 2.4.7
< 3.0.0
< 3.1.7
< 4.0.0
< 4.1.4

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Fixed versions

grafana12-4-main-12.4.10-0.4.hum1
grafana13-2-main-13.2.1-0.7.hum1
grafana13-1-main-13.1.6-0.3.hum1
RHSA-2026:71040

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Applications utilizing fast-uri for host validation should implement case-insensitive comparisons by converting the parsed host to lowercase before performing any allowlist or denylist checks. This ensures that variations in host casing, including percent-encoded uppercase octets, do not lead to security bypasses.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Discussion(0)

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