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CVE

CVE-2026-3009

Keycloak allows authentication using an Identity Provider (IdP) even after it has been disabled by an administrator
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CVE

CVE-2026-3009

Keycloak allows authentication using an Identity Provider (IdP) even after it has been disabled by an administrator

A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the administrative restriction. This undermines access control enforcement and may allow unauthorized authentication through a disabled external provider.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
C
H
U
8.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-3009, https://github.com/keycloak/keycloak/issues/46911, https://github.com/keycloak/keycloak/commit/4fd5367e6cc28cfa68fb2240fc459c12b1fdbf2a, https://access.redhat.com/errata/RHSA-2026:3947, https://access.redhat.com/errata/RHSA-2026:3948, https://access.redhat.com/security/cve/CVE-2026-3009, https://bugzilla.redhat.com/show_bug.cgi?id=2441867, https://github.com/keycloak/keycloak, https://github.com/keycloak/keycloak/releases/tag/26.5.5

Severity

8.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.1
EPSS Probability
0.00037%
EPSS Percentile
0.11127%
Introduced Version
26.5.0,26.0.0,25.0.0,22.0.0,25.0.3,12.0.0,3.4.2.Final,3.2.0.CR1,3.0.0.CR1,1.2.0.Beta1
Fix Available
26.5.5

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