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    CVE-2026-105301

    This candidate was rejected after further investigation determined that it is not a security vulnerability. The client certificate chain is validated during mTLS negotiation at the TLS layer or reverse proxy before Keycloak processes CRL Distribution Point or OCSP URLs, so only certificates issued by a CA explicitly trusted by the administrator can trigger these requests.

    Published:Oct 2, 2026
    Last Modified:Oct 21, 2026
    EPS:Oct 5, 2026
    EPSS Score:0.0012
    CVSS Score:4

    Affected Products

    Vendor
    Redhat
    Product
    Build Of Keycloak
    Vendor
    Redhat
    Product
    Single Sign-on

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-918 Server-Side Request Forgery

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

    CVE-2026-118947 (CVSS 4.3) — A flaw was found in the UMA resource registration endpoint of the keycloak-services component, which provides …
    CVE-2026-118959 (CVSS 5.4) — A flaw was found in the required action provider mechanism of Keycloak. The issue occurs when an authorization…
    CVE-2026-118425 (CVSS 6.8) — A flaw was found in the secure-redirect-uris-enforcer client policy of Keycloak, an identity and access manage…
    CVE-2026-117627 (CVSS 5.4) — A flaw was found in the JWT Authorization Grant implementation of the keycloak-services component. When an OID…
    CVE-2026-117688 (CVSS 5.3) — A flaw was found in the client registration component of Keycloak, an open-source identity and access manageme…
    CVE-2026-117859 (CVSS 5.4) — A flaw was found in the Pushed Authorization Request PAR implementation of the keycloak-services component. Th…
    CVE-2026-118030 (CVSS 4.2) — A flaw was found in the HOTP authentication mechanism of the keycloak-services component, which provides ident…
    CVE-2026-114438 (CVSS 4.2) — A flaw was found in the Update User Locale required action of the Keycloak identity and access management solu…
    CVE-2026-109082 (CVSS 6.8) — A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-se…
    CVE-2026-107889 (CVSS 5.5) — A flaw was found in the login theme rendering component of Keycloak. The issue occurs because the security fil…

    References

    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