Information Disclosure Vulnerability in Keycloak SOAP Endpoint
CVE-2026-9794

5.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Vendor
CVE Published:
28 May 2026

What is CVE-2026-9794?

A vulnerability exists within Keycloak that allows a remote, unauthenticated attacker to exploit the SAML ECP (Security Assertion Markup Language Enhanced Client or Proxy) endpoint by sending specially crafted SOAP requests with varied client IDs. This exploitation leads to information disclosure as the attacker can discern the client's protocol type through the distinct faultstrings returned in the responses.

References

https://access.redhat.com/security/cve/CVE-2026-9794
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2482461
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Asaad Mostafa and Muhammed Hussein for reporting this issue.
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