CVE-2026-1486 Org.keycloak.protocol.oidc.grants: disabled identity providers are still accepted for jwt authorization grant
Attackers with disabled IdP keys can obtain valid tokens because Keycloak fails to check if the Identity Provider is enabled during JWT authorization grants.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-1486?
CVE-2026-1486 is a high-severity authentication bypass vulnerability in Red Hat build of Keycloak 26.4, published on 9 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-358
Which versions are affected by CVE-2026-1486?
4 open source packages ship an affected version, including org.keycloak:keycloak-services.
| Package | Affected | Fixed in |
|---|---|---|
org.keycloak:keycloak-services Maven | All versions | 26.4.9 |
org.keycloak:keycloak-services Maven | All versions | 26.4.9 |
org.keycloak:keycloak-services Maven | From 26.5.0 | 26.5.3 |
org.keycloak:keycloak-services Maven | From 26.5.0 | 26.5.3 |
How do I fix CVE-2026-1486?
Upgrade org.keycloak:keycloak-services to a fixed version for your release line: 26.4.9 or 26.5.3.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-1486 being exploited?
There is no known exploitation of CVE-2026-1486 in the wild and no public exploit code.
Sources
Also known as ECHO-9a16-1a02-56bc, GHSA-37gf-gmxv-74wv, MINI-hxgc-6jpf-9w27, MINI-p38m-24wh-8h29.