CVE-2026-15612: Logto

Critical severity, CVSS 9.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Logto bypasses OIDC nonce validation when the nonce claim is absent from the id_token, enabling replay of authentication tokens and weakening session-binding.

Affected products

• Logto Logto: from 1.10.1, up to and including 1.37.1

Published 2026-07-23. Last modified 2026-07-27.