What’s Vulnerable › Vulnerabilities

CVE-2025-14559: Org.keycloak/keycloak-services: keycloak keycloak-services: business logic flaw allows unauthorized token issuance for disabled users

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-21 · updated 2026-06-17
• Weakness: CWE-840

Description

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 build of Keycloak 26.4: all versions — fixed in 26.4-10, 26.4-11, 26.4.9-1

How to fix

Upgrade to a fixed version: Red Hat build of Keycloak 26.4 26.4-10, 26.4-11, 26.4.9-1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2026:2365
• https://access.redhat.com/errata/RHSA-2026:2366
• https://access.redhat.com/security/cve/CVE-2025-14559
• https://bugzilla.redhat.com/show_bug.cgi?id=2421711

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