SSRF in Red Hat Build Of Keycloak
CVE-2026-1180
A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:6477 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:6478 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-1180 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
Frequently asked questions
- What is CVE-2026-1180?
- CVE-2026-1180 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.8/10. Published 2026-01-20.
- How severe is CVE-2026-1180?
- Medium severity. CVSS v3 base score is 5.8 out of 10.