CVE Watch15 jul 2026

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 Pro

CVSS

8.8

Alto

EPSS

0.4%

p36

KEV

—

Exploit Today

0-100

Publicado: 9 feb 2026 · Última mod.: 15 jul 2026 · CWE-358

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-06-302026-07-16

Descripción técnica

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.

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