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Medium · 6.8 CVE-2026-125652 EUVD-2026-120850GHSA-rp3r-7x6g-5mw6

Keycloak-services: keycloak-services: client-level mandatory pkce bypass via login-actions entry point

Published Nov 10, 2026 · Updated Nov 10, 2026 · Assigned by redhat

Description

A flaw was found in the keycloak-services component of Keycloak, which provides the core authentication and authorization logic for the identity provider. The issue occurs when a user initiates a login after visiting the password reset page, causing the system to skip mandatory security checks for Proof Key for Code Exchange (PKCE). This could allow an attacker who intercepts a login code to gain unauthorized access to the user's account without needing the required security verifier.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Build of Keycloak — —
Red Hat Red Hat Single Sign-On 7 — —

Advisories 1

References