CVE-2026-7307
Published: May 19, 2026
Modified: May 20, 2026
CVSS v3.1
7.5
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.
| Vendor | Product | Versions |
|---|---|---|
Red Hat | Red Hat build of Keycloak 26.2 | unaffected 26.2.16-1 - < * |
Red Hat | Red Hat build of Keycloak 26.2 | unaffected 26.2-21 - < * |
Red Hat | Red Hat build of Keycloak 26.2 | unaffected 26.2-21 - < * |
Red Hat | Red Hat build of Keycloak 26.2.16 | All versions |
Red Hat | Red Hat build of Keycloak 26.4 | unaffected 26.4.12-1 - < * |
Red Hat | Red Hat build of Keycloak 26.4 | unaffected 26.4-17 - < * |
Red Hat | Red Hat build of Keycloak 26.4 | unaffected 26.4-17 - < * |
Red Hat | Red Hat build of Keycloak 26.4.12 | All versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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