Vulnerability Description
A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:19594
- https://access.redhat.com/errata/RHSA-2026:19595
- https://access.redhat.com/errata/RHSA-2026:19596
- https://access.redhat.com/errata/RHSA-2026:19597
- https://access.redhat.com/security/cve/CVE-2026-7307
- https://bugzilla.redhat.com/show_bug.cgi?id=2476526
FAQ
What is CVE-2026-7307?
CVE-2026-7307 is a vulnerability with a CVSS score of 7.5 (HIGH). A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high C...
How severe is CVE-2026-7307?
CVE-2026-7307 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-7307?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.