CVE-2026-9794
MEDIUMKeycloak: keycloak: information disclosure via saml ecp endpoint
Title source: cnaDescription
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.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:25097
https://access.redhat.com/errata/RHSA-2026:25097
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:25098
https://access.redhat.com/errata/RHSA-2026:25098
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2482461
https://bugzilla.redhat.com/show_bug.cgi?id=2482461
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-9794
Scores
CVSS v3
5.3
EPSS
0.0031
EPSS Percentile
22.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-209
Status
published
Products (5)
Red Hat/Red Hat Build of Keycloak
Red Hat/Red Hat build of Keycloak 26.6
26.6-6
Red Hat/Red Hat build of Keycloak 26.6
26.6.3-3
Red Hat/Red Hat build of Keycloak 26.6.3
redhat/build_of_keycloak
Published
May 28, 2026
Tracked Since
May 28, 2026