CVE-2025-14559: Red Hat Build Of Keycloak 26.4

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A flaw was found in the keycloak-services component of Keycloak. This vulnerability allows the issuance of access and refresh tokens for disabled users, leading to unauthorized use of previously revoked privileges, via a business logic vulnerability in the Token Exchange implementation when a privileged client invokes the token exchange flow.

Affected products

• Red Hat Red Hat Build Of Keycloak 26.4: before 26.4.9-1 (fixed in 26.4.9-1); before 26.4-11 (fixed in 26.4-11); before 26.4-10 (fixed in 26.4-10)
• Red Hat Red Hat Build Of Keycloak 26.4.9

Published 2026-01-21. Last modified 2026-06-17.