CVEvulnerability

CVE-2026-90997

7.4 HIGH Published 2026-09-17 Modified 2026-09-22 Official page ↗
Status
Awaiting Analysis
Published
2026-09-17
Last modified
2026-09-22
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-294

Description

A flaw was found in Keycloak. When deployed in stateless mode with MySQL or MariaDB, a mismatch in row-count semantics between the database driver and Keycloak's application logic allows an attacker to bypass replay protection. This vulnerability enables an attacker who intercepts single-use security artifacts, such as JWT client assertions, DPoP proofs, or one-time password (TOTP) codes, to replay them. Successful exploitation grants unauthorized access to the token endpoint or login flow.

Related

Weakness · CWE (1)

  • CWE-294 Authentication Bypass by Capture-replay weakness

References