🛡️ CVE-2026-1486
🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-358 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 (lookupIdentityProviderFromIssuer) retrieves the IdP configuration but does not filter for isEnabled=false. If an administrator disables an IdP (e.g., due to a compromise or offboarding), an entity possessing that IdP's signing key can still generate valid JWT assertions that Keycloak accepts, resulting in the issuance of valid access tokens.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-358
Public Exploit ✅ No
Source NVD
Published 2026-02-09
Updated 2026-06-15
Modified 2026-02-13
Fix URL N/A

Affected Packages

Software From version Fixed in
org.keycloak:keycloak-services 26.4.9
unknown

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