CVEvulnerability

CVE-2026-109082

6.8 MEDIUM Published 2026-10-12 Modified 2026-10-15 Official page ↗
Status
Awaiting Analysis
Published
2026-10-12
Last modified
2026-10-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Weaknesses
CWE-287

Description

A flaw was found in the Client-Initiated Backchannel Authentication CIBA implementation within the keycloak-services component of Keycloak. This component handles advanced authentication flows where a client initiates a login on behalf of a user. The issue occurs because Keycloak fails to verify that a client is authorized to use the CIBA flow, allowing public clients to bypass security requirements. An attacker could use this flaw to trick a user into approving a login request, eventually gaining full access to the users account without needing a client secret.

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References