What is CVE-2026-1486?

CVE-2026-1486 is a high-severity vulnerability in Red Hat Build Of Keycloak 26.4, classified under CWE-358. CVSS score: 8.8/10. Published 2026-02-09.

How severe is CVE-2026-1486?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Red Hat Build Of Keycloak 26.4

CVE-2026-1486

A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider (IdP) is enabled before issuing tokens. The issuer lookup mechanism (lookupIdentityProviderFr…

EPSS: 0.004 (35.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Red Hat Build Of Keycloak 26.4 — versions 26.4.9-1, 26.4-11, 26.4-10
Red Hat Build Of Keycloak 26.4.9

Weakness classification (CWE)

CWE-358

References

secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Frequently asked questions

What is CVE-2026-1486?: CVE-2026-1486 is a high-severity vulnerability in Red Hat Build Of Keycloak 26.4, classified under CWE-358. CVSS score: 8.8/10. Published 2026-02-09.
How severe is CVE-2026-1486?: High severity. CVSS v3 base score is 8.8 out of 10.