Keycloak Admin API allows an administrator with limited privileges to retrieve sensitive custom attributes

Description

References

• nvd.nist.gov/vuln/detail/CVE-2025-13881 · ADVISORY
• keycloak/keycloak · WEB
• keycloak/keycloak#45427 · WEB
• keycloak/keycloak commit 1d7ab8d · WEB
• keycloak/keycloak commit c5c83d6 · WEB
• access.redhat.com/errata/RHSA-2026:2365 · WEB
• access.redhat.com/errata/RHSA-2026:2366 · WEB
• access.redhat.com/security/cve/CVE-2025-13881 · WEB
• bugzilla.redhat.com/show_bug.cgi · WEB
• keycloak/keycloak · PACKAGE

More vulnerabilities in org.keycloak:keycloak-services

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• CVE-2026-9799MEDIUM 4.6A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access (UMA) permission ticket for one res…
• CVE-2026-9705MEDIUM 6.5A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT…
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