Open Redirect in Red Hat Build Of Keycloak
CVE-2026-118425
A flaw was found in the secure-redirect-uris-enforcer client policy of Keycloak, an identity and access management solution. The issue occurs when the policy is configured to allow loopback addresses, as Keycloak resolves hostnames via DNS during validation. An attacker can bypass domain allowlist restrictions by using a hostname that resolves to a loopback address, potentially allowing the registration of unauthorized redirect URIs.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-118425 (vdb-entry)
Frequently asked questions
- What is CVE-2026-118425?
- CVE-2026-118425 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.8/10. Published 2026-10-29.
- How severe is CVE-2026-118425?
- Medium severity. CVSS v3 base score is 6.8 out of 10.