CVE-2026-23552

Name: CVE-2026-23552
Creator: NVD / NIST
Published: 2026-02-23T09:17:00.857+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2026-23552 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

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

9.1/10

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

EPSS Probability

0.40%

31.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-346

Affected Software

Vendor	Product	Versions
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
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-23552?

How severe is CVE-2026-23552?

CVE-2026-23552 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-23552?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-23552?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST