What is CVE-2026-8830?

CVE-2026-8830 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under CWE-603. CVSS score: 4.3/10. Published 2026-05-19.

How severe is CVE-2026-8830?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Red Hat Build Of Keycloak

CVE-2026-8830

A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that t…

EPSS: 0.000 (4.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Red Hat Build Of Keycloak
Redhat Build_of_keycloak

Weakness classification (CWE)

CWE-603

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-2026-8830?: CVE-2026-8830 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under CWE-603. CVSS score: 4.3/10. Published 2026-05-19.
How severe is CVE-2026-8830?: Medium severity. CVSS v3 base score is 4.3 out of 10.