CVE-2017-12158
Keycloak Reflected XSS
5.4
MEDIUM
CVSS 3.1
EPSS 0.67%
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.
How to fix CVE-2017-12158
To remediate CVE-2017-12158, upgrade the affected package to a fixed version below.
- Maven/org.keycloak:keycloak-parent—upgrade to 3.4.0 or later
Is CVE-2017-12158 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.4.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |