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CVE-2026-1486
HIGH8.8
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.
CVE Details
CVSS v3.1 Score8.8
SeverityHIGH
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
Published2/9/2026
Last Modified2/10/2026
Sourcenvd
Honeypot Sightings0
Weaknesses (CWE)
CWE-358
References
https://access.redhat.com/errata/RHSA-2026:2365(secalert@redhat.com)
https://access.redhat.com/errata/RHSA-2026:2366(secalert@redhat.com)
https://access.redhat.com/security/cve/CVE-2026-1486(secalert@redhat.com)
https://bugzilla.redhat.com/show_bug.cgi?id=2433347(secalert@redhat.com)
IOC Correlations
No correlations recorded
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