Feed/CVE-2026-9794
CVE-2026-9794MEDIUMCVSS 5.3

Keycloak Generates an Error Message Containing Sensitive Information

Published May 28, 2026·Updated Jul 1, 2026

NVD 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.

Affected Packages (1)

org.keycloak:keycloak-servicesMAVEN
Fixed in = 26.4.7

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

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