Bug 2476526 (CVE-2026-7307) - CVE-2026-7307 keycloak: Keycloak: Denial of Service via specially crafted SAML input
Summary: CVE-2026-7307 keycloak: Keycloak: Denial of Service via specially crafted SAM...
Keywords:
Status: NEW
Alias: CVE-2026-7307
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-12 16:24 UTC by OSIDB Bzimport
Modified: 2026-05-19 10:43 UTC (History)
11 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-12 16:24:36 UTC 
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.
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