{"id":"CVE-2026-105301","published":"2026-10-05T06:16:58.207","lastModified":"2026-10-06T15:09:20.387","description":"A flaw was found in the X.509 client-certificate authenticator of Keycloak, a solution for identity and access management. The issue occurs when the server is configured to check certificate revocation using CRL Distribution Points or OCSP. An attacker can provide a specially crafted certificate that points to a malicious server, causing Keycloak to make unauthorized outbound requests to internal or external endpoints before the certificate is fully validated. This can lead to a blind server-side request forgery (SSRF) attack.","cvssScore":4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N","cwes":["CWE-918"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-105301","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545797","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}