CVE-2026-61503

Medium

Description

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductRejetto Hfs

PublishedJul 13, 2026

First seenJul 13, 2026

Weakness typeCWE-204CWE-204

How to fix

Update

rejetto hfs3.2.1 or later

Patches

github.com/rejetto/hfs/releases/tag/v3.2.1

Affected products

Product	Affected versions	Fixed in
rejetto hfs	3.0.0 ≤ v < 3.2.1	3.2.1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.