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CRITICAL

Apache Camel: Camel-Keycloak: Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy

Published Feb 23, 2026

Description

Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy Apache Camel Keycloak component. 

The Camel-Keycloak KeycloakSecurityPolicy does not validate the iss (issuer) claim of JWT tokens against the configured realm. A token issued by one Keycloak realm is silently accepted by a policy configured for a completely different realm, breaking tenant isolation. This issue affects Apache Camel: from 4.15.0 before 4.18.0.

Users are recommended to upgrade to version 4.18.0, which fixes the issue.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (1)

References (8)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Feb 23, 2026
Updated Feb 23, 2026
Reserved Jan 14, 2026
CISA Vulnrichment
Updated Feb 23, 2026
NVD
Status Analyzed
Modified Jun 17, 2026
Red Hat
Severity n/a
Public date n/a
ENISA EUVD
Assigner apache
Published Feb 23, 2026
Updated Feb 23, 2026
Exploited since n/a
EUVD-2026-7591 GHSA-C3F3-CC42-XR9V