Apache Camel: KeycloakSecurityPolicy does not validate issuer of JWT tokens against configured realm
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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.camel:camel-keycloak | >= 4.15.0, < 4.18.0 | 4.18.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-23552
- https://github.com/apache/camel/commit/c1ed776e3a4fa23d15acf4b9a48fdf758d4316ff
- https://camel.apache.org/security/CVE-2026-23552.html
- https://github.com/apache/camel
- https://github.com/oscerd/CVE-2026-23552
- https://issues.apache.org/jira/browse/CAMEL-22854
- http://www.openwall.com/lists/oss-security/2026/02/18/7
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-346- Platform
- Java / Kotlin (Maven)
- Package
org.apache.camel:camel-keycloak- Disclosed
- 23.02.2026
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-c3f3-cc42-xr9v - CC BY 4.0
Vulnerability history: org.apache.camel:camel-keycloak
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 02.2026 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 3
Disclosures per year
- 2026: 3
-
Apache Camel: KeycloakSecurityPolicy does not validate issuer of JWT tokens against configured realm this entry
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