CVE-2026-23552NVD

Vulnerability Summary

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.

Severity Level

CRITICAL(9.1)

Published Date

Feb 23, 2026

Last Modified

Feb 26, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.04%Probability

Root Weakness (CWE)

CWE-346: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 9.1 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

Affected & Patched Versions

Affected Versions

Apache Camel >= 4.15.0 and < 4.18.0

Patched Versions

Apache Camel 4.18.0

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