GHSA-rhgq-f8x5-j2jcLowCVSS 3.7
Keycloak's identity-first login flow exposes user information
🔗 CVE IDs covered (1)
📋 Description
A flaw was found in Keycloak. A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. This vulnerability allows an attacker to determine the existence of users, leading to information disclosure through user enumeration.
🎯 Affected products2
- maven/org.keycloak:keycloak-services:>= 26.5.0, < 26.6.1
- maven/org.keycloak:keycloak-services:< 26.4.12
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2026-4633
- https://access.redhat.com/security/cve/CVE-2026-4633
- https://bugzilla.redhat.com/show_bug.cgi?id=2450247
- https://github.com/keycloak/keycloak/issues/47619
- https://github.com/keycloak/keycloak/commit/b137016cc6dcfd9f59b2aa2e6d73af8b0ebf7c6e
- https://github.com/keycloak/keycloak/commit/b4558a874fa79341404ae4d2d8f240f22bfed340
- https://github.com/keycloak/keycloak/pull/47635
- https://github.com/advisories/GHSA-rhgq-f8x5-j2jc