CVE-2026-2092

HIGH7.7EPSS 0.10%

Keycloak: Unauthorized access via improper validation of encrypted SAML assertions

Published: 3/18/2026Modified: 4/8/2026

Description

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.

Affected packages (3)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1HIGH7.7CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

References (9)