PT-2026-44185 · Red Hat · Red Hat Build Of Keycloak

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-9794

Mitre

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

A flaw was found in Keycloak. A remote, unauthenticated attacker can exploit this vulnerability by sending specially crafted SOAP requests to the SAML ECP (Security Assertion Markup Language Enhanced Client or Proxy) endpoint with varying client IDs. By observing distinct faultstrings in the responses, the attacker can determine the client's protocol type, leading to information disclosure.

Fix

Generation of Error Message Containing Sensitive Information

Weakness Enumeration

CWE-209

Related Identifiers

CVE-2026-9794

Affected Products

Red Hat Build Of Keycloak

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-9794 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2482461 · Note
• https://access.redhat.com/security/cve/CVE-2026-9794 · Note