CVE-2026-15617: Logto

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Logto performs principal lookup without normalizing email and identifier strings, enabling principal collision and unauthorized account access via case- or Unicode-different identities.

Affected products

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

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