CVE-2026-26744: Formalms

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A user enumeration vulnerability exists in FormaLMS 4.1.18 and below in the password recovery functionality accessible via the /lostpwd endpoint. The application returns different error messages for valid and invalid usernames allowing an unauthenticated attacker to determine which usernames are registered in the system through observable response discrepancy.

Affected products

• Formalms Formalms: up to and including 4.1.18

Published 2026-02-19. Last modified 2026-06-17.