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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-7307

Keycloak: keycloak: denial of service via specially crafted saml input

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Status
Published
Published
Updated
Assigning organization
redhat

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

keycloak

Default version status: unaffected

  • 0 to < 26.2.16affected
  • 0 to < 26.4.12affected
  • 0 to < 26.6.2affected

Red Hat Red Hat build of Keycloak 26.2

Default version status: affected

  • 26.2.16-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.2

Default version status: affected

  • 26.2-21 to < *unaffected

Red Hat Red Hat build of Keycloak 26.2

Default version status: affected

  • 26.2-21 to < *unaffected

Red Hat Red Hat build of Keycloak 26.2.16

Default version status: unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4.12-1 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-17 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4

Default version status: affected

  • 26.4-17 to < *unaffected

Red Hat Red Hat build of Keycloak 26.4.12

Default version status: unaffected

Red Hat Red Hat Single Sign-On 7.6.13

Default version status: unaffected

Red Hat Red Hat Single Sign-On 7.6 for RHEL 7

Default version status: affected

  • 0:18.0.20-1.redhat_00001.1.el7sso to < *unaffected

Red Hat Red Hat Single Sign-On 7.6 for RHEL 8

Default version status: affected

  • 0:18.0.20-1.redhat_00001.1.el8sso to < *unaffected

Red Hat Red Hat Single Sign-On 7.6 for RHEL 9

Default version status: affected

  • 0:18.0.20-1.redhat_00001.1.el9sso to < *unaffected

Red Hat RHEL-8 based Middleware Containers

Default version status: affected

  • 7.6-85 to < *unaffected

References