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    CVE-2026-23552

    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.

    Published:Feb 23, 2026
    Last Modified:Apr 18, 2026
    EPS:Feb 23, 2026
    EPSS Score:0.00042
    CVSS Score:9.1

    Affected Products

    Vendor
    Apache
    Product
    Camel

    Exploits

    https://github.com/oscerd/CVE-2026-23552https://github.com/oscerd/CVE-2026-23552

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High