CVSS 3.0
5.4 mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NCVE-2017-12158
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.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-79, CWE-444
- Published
- Modified
- Record from
- the NVD, synced
Affected
- keycloak:keycloak
- redhat:single_sign_on
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v38p-mqq3-m6v5 | Maven | org.keycloak:keycloak-parent | <3.4.0 | 3.4.0 |