Information Exposure Affecting keycloak-advanced-compat package, versions <26.6.3-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.33% (25th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-KEYCLOAKADVANCEDCOMPAT-17805047
  • published3 Jul 2026
  • disclosed28 May 2026

Introduced: 28 May 2026

CVE-2026-9794  (opens in a new tab)
CWE-209  (opens in a new tab)

How to fix?

Upgrade Minimos:latest keycloak-advanced-compat to version 26.6.3-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keycloak-advanced-compat package and not the keycloak-advanced-compat package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1