CVE-2026-23552

CRITICAL

9.1

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.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/23/2026

Last Modified2/26/2026

Sourcenvd

Honeypot Sightings0

Affected Products

apache:camel

Weaknesses (CWE)

CWE-346

References

https://camel.apache.org/security/CVE-2026-23552.html(security@apache.org)

https://github.com/oscerd/CVE-2026-23552(security@apache.org)

http://www.openwall.com/lists/oss-security/2026/02/18/7(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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