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CVE-2026-9794— Keycloak: keycloak: information disclosure via saml ecp endpoint

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-9794

Vulnerability Information
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Vulnerability Title
Keycloak: keycloak: information disclosure via saml ecp endpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过错误消息导致的信息暴露
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Build of Keycloak-cpe:/a:redhat:build_keycloak:

II. Public POCs for CVE-2026-9794

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III. Intelligence Information for CVE-2026-9794

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Vendor Advisories for CVE-2026-9794 (1)

Other References for CVE-2026-9794 (1)

Same Patch Batch · Red Hat · 2026-05-28 · 13 CVEs total

CVE-2026-44089.0 CRITICALSamba: remote code execution in samr
CVE-2026-98047.7 HIGHKubevirt: kubevirt: vmexport directory symlink escape enables exporter pod file read
CVE-2026-97957.3 HIGHKeycloak: keycloak: privilege escalation via improper scope mapping enforcement
CVE-2026-446047.0 HIGHRpm: command injection in rpmuncompress dountar() via unescaped archive top-level director
CVE-2026-98026.8 MEDIUMKeycloak: keycloak: unauthorized account access via replayed refresh tokens after cluster
CVE-2026-97966.5 MEDIUMKeycloak: keycloak: privilege escalation via time-of-check to time-of-use (toctou) vulnera
CVE-2026-97926.5 MEDIUMKeycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition
CVE-2026-97935.9 MEDIUMKeycloak: keycloak: security policy bypass in jwe-encrypted request object processing
CVE-2026-98035.3 MEDIUMKeycloak: keycloak: denial of service via malformed authorization header
CVE-2026-98014.9 MEDIUMKeycloak: keycloak: denial of service via malformed ldap password policy response
CVE-2026-97984.3 MEDIUMKeycloak: keycloak: brute-force protection bypass in ciba flow
CVE-2026-97914.3 MEDIUMKeycloak-rhel9: organization data leak after feature disabled in keycloak

IV. Related Vulnerabilities

Same product: Red Hat Build of Keycloak
Same vendor: Red Hat
Same weakness: CWE-209

V. Comments for CVE-2026-9794

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