PT-2026-23493 · Red Hat · Keycloak

Osidb Bzimport · Published 2026-03-05 · Updated 2026-03-08 · CVE-2026-3009

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

Description A flaw exists in the IdentityBrokerService.performLogin endpoint of Keycloak that allows authentication to continue using an Identity Provider (IdP) even after it has been administratively disabled. An attacker with knowledge of the IdP alias can reuse a previous login request to circumvent the administrative restriction. This bypasses access control enforcement, potentially enabling unauthorized authentication through a disabled external provider.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authorization

Incorrect Authorization

Weakness Enumeration

CWE-285

CWE-863

Related Identifiers

CVE-2026-3009

GHSA-M297-3JV9-M927

Affected Products

Keycloak

References · 16

• https://osv.dev/vulnerability/GHSA-m297-3jv9-m927 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-3009 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:3948 · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-3009 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2441867 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:3947 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3009 · Security Note
• https://github.com/keycloak/keycloak/commit/4fd5367e6cc28cfa68fb2240fc459c12b1fdbf2a · Note
• https://github.com/keycloak/keycloak · Note
• https://github.com/keycloak/keycloak/issues/46911 · Note
• https://github.com/keycloak/keycloak/releases/tag/26.5.5 · Note
• https://t.me/CVEtracker/46479 · Telegram Post
• https://twitter.com/TheHackerWire/status/2030622253394821611 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2029753593016807510 · Twitter Post
• https://twitter.com/CVEnew/status/2029654711679254896 · Twitter Post