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  4. CVE 2026 18207 keycloak services keycloak services client policy
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Back to active CVEs
Medium · CVSS 6.5CVE-2026-18207

Keycloak-services: keycloak-services: client policy source-group condition bypass via duplicate group name matchingCVE-2026-18207

Answer in brief

CVE-2026-18207 records a Medium severity (CVSS 6.5) vulnerability in Keycloak-services: keycloak-services: client policy source-group condition bypass via duplicate group name matching. The current sources do not mark it as known exploited. The current feed maps Red Hat/keycloak-services (generic), Red Hat/rhbk-keycloak-rhel9/rhbk-keycloak-rhel9 (generic), Red Hat/rhbk-openshift-rhel9/rhbk-openshift-rhel9 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 29, 2026Updated Aug 31, 2026Source checked Oct 16, 2026First seen by HOL Aug 11, 2026Material review Aug 31, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.5
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/keycloak-services (generic), Red Hat/rhbk-keycloak-rhel9/rhbk-keycloak-rhel9 (generic), Red Hat/rhbk-openshift-rhel9/rhbk-openshift-rhel9 (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/keycloak-servicesgeneric*Not reported
Red Hat/rhbk-keycloak-rhel9/rhbk-keycloak-rhel9generic*Not reported
Red Hat/rhbk-openshift-rhel9/rhbk-openshift-rhel9generic*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/keycloak-services, Red Hat/rhbk-keycloak-rhel9/rhbk-keycloak-rhel9, Red Hat/rhbk-openshift-rhel9/rhbk-openshift-rhel9.
  2. 2Review the reported fix. Source-reported workaround: 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.

Evidence timeline and material changes

  1. Published upstream

    Jul 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 11, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
Upstream source description

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a different part of the group hierarchy, potentially allowing them to register or update clients without following required security hardening profiles.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • IBM i is Affected By Improper Authorization and Access Control Vulnerabilities in Network File SystemAlso CWE-285
  • IBM i is Affected by an Improper Validation VulnerabilityAlso CWE-285
  • ZoneMinder: Authenticated OS Command Injection (RCE) via Export FeatureSame generic ecosystem
  • ZoneMinder: Authenticated OS Command Injection via unsanitized Monitor Name in event export (download_functions.php)Same generic ecosystem
  • JavaCV: Integer Overflow in IPCameraFrameGrabber Causes Infinite-Loop DoSSame generic ecosystem
  • IBM i is Affected By An Improper Privilege Management VulnerabilitySame generic ecosystem

Record context

Vulnerability class
Privilege Escalation
EPSS
Not reported
CWE IDs
CWE-285
Source
CVE List V5
Source checked
Oct 16, 2026
References
1 linked source
Open source record