Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2026-16100] Unbounded metric cardinality in user event metrics via request-controlled error text

This medium-severity Red Hat Linux advisory covers CVE-2026-16100 affecting Red Hat build of Keycloak 26.6.

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

CVE-2026-16100 Source published Aug 5, 2026Source updated Aug 5, 2026

VulniPulse record published Aug 5, 2026Record updated Aug 11, 2026

CVE-2026-16100

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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Summary

Unbounded metric cardinality in user event metrics via request-controlled error text. Red Hat rates this moderate (CVSS 6.5).

Red Hat lists fixing advisory RHSA-2026:50848 with package rhbk/keycloak-rhel9:26.6-11, rhbk-keycloak-rhel9/rhbk-keycloak-rhel9, keycloak-services, rhbk/keycloak-rhel9-operator:26.6-11.

Affected product named by the advisory: Red Hat build of Keycloak 26.6.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

rhbk/keycloak-rhel9:26.6-11
rhbk-keycloak-rhel9/rhbk-keycloak-rhel9
keycloak-services
rhbk/keycloak-rhel9-operator:26.6-11
rhbk-openshift-rhel9/rhbk-openshift-rhel9
rhbk/keycloak-operator-bundle:26.6.5-1
RHSA-2026:50848

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Red Hat Security Data APIofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://access.redhat.com/hydra/rest/securitydata/cve.json; this link opens the Red Hat Linux advisory index instead of the raw feed document.
Red Hat Linux
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Red Hat Linux
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-16100NVD CVE.org MITRE

Discussion(0)

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