CVEvulnerability

CVE-2026-7307

7.5 HIGH Published 2026-05-19 Modified 2026-10-26 Official page ↗
Status
Modified
Published
2026-05-19
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1286

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 configurations

• redhat build of keycloak (>= 26.4 < 26.4.12)

Related

Weakness · CWE (1)

  • CWE-1286 Improper Validation of Syntactic Correctness of Input weakness

References