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  4. CVE 2026 16102 keycloak services keycloak services default dcr
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Back to active CVEs
High · CVSS 8.1CVE-2026-16102

Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappersCVE-2026-16102

Answer in brief

CVE-2026-16102 records a High severity (CVSS 8.1) vulnerability in Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers. The current sources do not mark it as known exploited. The current feed maps Red Hat/keycloak-services (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 Aug 5, 2026Updated Aug 31, 2026Source checked Nov 5, 2026First seen by HOL Aug 5, 2026Material review Aug 31, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.1
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.1. 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). 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
cpe:2.3:a:redhat:data_grid:8.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:jboss_enterprise_application_platform_expansion_pack:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/keycloak-servicesgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/keycloak-services.
  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

    Aug 5, 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 5, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker with a standard user account and a limited Initial Access Token can exploit this to forge administrative roles in their access token. This allows the attacker to take over other clients, steal confidential secrets, and potentially gain full administrative control over the realm.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Keycloak-services: keycloak-services: saml redirect binding signature bypass via percent-encoded parameter namesSame red hat/keycloak-services package

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-284, CWE-551
Source
CVE List V5
Source checked
Nov 5, 2026
References
6 linked sources
Open source record