{"id":"CVE-2026-97846","published":"2026-09-25T07:16:57.147","lastModified":"2026-09-25T14:17:26.973","description":"Keycloak provides a feature called mTLS holder-of-key binding which ensures that a token can only be used by the client that originally requested it by binding it to their digital certificate. A flaw was discovered where the new Standard Token Exchange V2 feature does not check for this certificate. This allows an attacker with stolen client credentials to obtain a standard, unrestricted token that bypasses these security protections.","cvssScore":6.8,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-287"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-97846","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2540949","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}