Description
It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.
References (5)
Scores
CVSS v3
5.4
EPSS
0.0067
EPSS Percentile
71.4%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-444
CWE-79
Status
published
Products (5)
keycloak/keycloak
org.keycloak/keycloak-parent
0 - 3.4.0Maven
Red Hat, Inc./keycloak
3.4.0
redhat/single_sign_on
7.0
redhat/single_sign_on
7.1
Published
Oct 26, 2017
Tracked Since
Feb 18, 2026