GHSA-9vm7-v8wj-3fqw

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    GHSA-9vm7-v8wj-3fqw

    Published: 23 Jan 2024Last Modified: 10 Sept 2026
    Aliases:
    CVE-2023-6927

    Summary: keycloak-core: open redirect via "form_post.jwt" JARM response mode

    Details: An incomplete fix was found in Keycloak Core patch. An attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt". It is observed that changing the response_mode parameter in the original proof of concept from "form_post" to "form_post.jwt" can bypass the security patch implemented to address CVE-2023-6134.

    References: https://github.com/keycloak/keycloak/security/advisories/GHSA-9vm7-v8wj-3fqw, https://nvd.nist.gov/vuln/detail/CVE-2023-6927, https://access.redhat.com/errata/RHSA-2024:0094, https://access.redhat.com/errata/RHSA-2024:0095, https://access.redhat.com/errata/RHSA-2024:0096, https://access.redhat.com/errata/RHSA-2024:0097, https://access.redhat.com/errata/RHSA-2024:0098, https://access.redhat.com/errata/RHSA-2024:0100, https://access.redhat.com/errata/RHSA-2024:0101, https://access.redhat.com/security/cve/CVE-2023-6927, https://bugzilla.redhat.com/show_bug.cgi?id=2255027, https://github.com/keycloak/keycloak

    Affected packages

    Package

    Name: org.keycloak:keycloak-core

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -23.0.4

    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
    GHSA-9vm7-v8wj-3fqw | CVE-DB