What is CVE-2026-9689?

CVE-2026-9689 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under CWE-1288. CVSS score: 4.2/10. Published 2026-05-27.

How severe is CVE-2026-9689?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in Red Hat Build Of Keycloak

CVE-2026-9689

A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication…

EPSS: 0.001 (22.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Red Hat Build Of Keycloak
Redhat Build_of_keycloak

Weakness classification (CWE)

CWE-1288

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-9689?: CVE-2026-9689 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under CWE-1288. CVSS score: 4.2/10. Published 2026-05-27.
How severe is CVE-2026-9689?: Medium severity. CVSS v3 base score is 4.2 out of 10.