CVE-2026-90997 | BDVDB-2026-376221 Detail

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.

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Exploit#

History#

1. Version 12026-09-17Record published in the CVE List.
2. Version 22026-09-25Most recent update recorded in the CVE List.