GHSA-r7rc-c989-86g6

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    GHSA-r7rc-c989-86g6

    Published: 29 Oct 2026Last Modified: 29 Oct 2026

    Summary: Keycloak: Attacker can re-enable and take over disabled clients via registration access token

    Details: ### Description A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker to reset the client's secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.

    References: https://github.com/keycloak/keycloak/security/advisories/GHSA-r7rc-c989-86g6, https://nvd.nist.gov/vuln/detail/CVE-2026-9705, https://access.redhat.com/errata/RHSA-2026:30049, https://access.redhat.com/errata/RHSA-2026:30050, https://access.redhat.com/errata/RHSA-2026:30083, https://access.redhat.com/errata/RHSA-2026:30084, https://access.redhat.com/security/cve/CVE-2026-9705, https://bugzilla.redhat.com/show_bug.cgi?id=2481878, https://github.com/keycloak/keycloak

    Affected packages

    Package

    Name: org.keycloak:keycloak-services

    Purl: pkg:maven/org.keycloak/keycloak-services

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -26.6.4

    Affected versions

    1.0-alpha-1

    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