CVE-2026-23552

CriticalCVSS 9.1/10Last modified Jun 17, 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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-346

Affected software

Vendor	Product	Versions
Apache Software Foundation	Apache Camel	>= 4.15.0, < 4.18.0

References

https://camel.apache.org/security/CVE-2026-23552.htmlVendor Advisory
https://github.com/oscerd/CVE-2026-23552Exploit, Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/02/18/7Mailing List, Third Party Advisory

Timeline

Published: Feb 23, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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