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.
Update org.keycloak:keycloak-services to 26.6.1; org.keycloak:keycloak-services to 26.4.12 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanKeycloak's identity-first login flow exposes user information affects org.keycloak:keycloak-services (maven), org.keycloak:keycloak-services (maven). Severity is low. 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.
AI coding agents often install or upgrade packages automatically in maven. A low vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| org.keycloak:keycloak-servicesmaven | >=26.5.0,<26.6.1 | 26.6.1 |
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.
Update org.keycloak:keycloak-services to 26.6.1; org.keycloak:keycloak-services to 26.4.12 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanKeycloak's identity-first login flow exposes user information affects org.keycloak:keycloak-services (maven), org.keycloak:keycloak-services (maven). Severity is low. 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.
AI coding agents often install or upgrade packages automatically in maven. A low vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| org.keycloak:keycloak-servicesmaven | >=26.5.0,<26.6.1 | 26.6.1 |
| org.keycloak:keycloak-servicesmaven | <26.4.12 | 26.4.12 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard| org.keycloak:keycloak-servicesmaven | <26.4.12 | 26.4.12 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard