A flaw was found in the X.509 client-certificate authenticator of Keycloak, a solution for identity and access management.
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.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Red Hat
- Product
- Keycloak / Single Sign-On, Java libraries / app servers, Open-source identity providers
- CVSS
- 4.0
- Exposure class
- Identity, Web platform
Why it ranks 15 (Routine)
- CVSS 4.0 medium
- Exposed product class: identity
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.