CVE-2026-9794
Medium · 5.3CVSS
5.3
EPSS
0.6%
Published
May 28, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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