CVE-2026-15611: Logto

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Logto allows unverified email-based SSO account linking, enabling an attacker to register an identity at a permissive IdP using a victim’s email and gain unauthorized access to the victim’s account.

Affected products

• Logto Logto: from 1.11.0, up to and including 1.37.1

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