CVE-2026-61503: Rejetto HFS

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

Rejetto HFS 3.0.0 through 3.2.0 returns observably different responses from its login endpoint depending on whether the submitted username exists. A remote unauthenticated attacker can use this to confirm valid account names, including the default admin account, facilitating password-guessing and session-forgery attacks.

Affected products

• Rejetto HFS: from 3.0.0, before 3.2.1 (fixed in 3.2.1)

Published 2026-07-13. Last modified 2026-07-15.