Vulnerabilities CVE-2026-7307

CVE-2026-7307

High

Open

TLP:CLEAR

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

NVD CVE.org

DDoS

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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.

Details

CVSS Score: 7.5
EPSS Score ⓘ: 0.74%

51.3th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence: 90%
Published: May 19, 2026
Last Modified: Jul 15, 2026

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