CVE Feed

    Dashboard / CVE / CVE-2026-107623

    CVE-2026-107623

    A flaw was found in the OIDC Dynamic Client Registration (DCR) component of Keycloak. A bug in the response serialization causes the backchannel logout offline token revocation setting to be omitted from responses. When a client performs a standard update, this missing information causes the setting to be silently disabled. As a result, offline tokens may remain valid even after a user session is terminated via backchannel logout.

    Published:Oct 7, 2026
    Last Modified:Oct 9, 2026
    EPS:Oct 8, 2026
    EPSS Score:
    CVSS Score:4.3

    Affected Products

    Vendor
    Redhat
    Product
    Build Keycloak
    Vendor
    Redhat
    Product
    Build Of Keycloak
    Vendor
    Redhat
    Product
    Red Hat Single Sign On
    Vendor
    Redhat
    Product
    Single Sign-on

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    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-2026-117688 (CVSS 5.3) — A flaw was found in the client registration component of Keycloak, an open-source identity and access manageme…
    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-2026-117859 (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…
    CVE-2026-107604 (CVSS 4.9) — A flaw was found in the installation provider and client registration endpoints of the Keycloak identity manag…
    CVE-2026-107121 (CVSS 6.5) — A flaw was found in the SMTP email configuration handling of the keycloak-services component. When the STARTTL…

    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