5.3Medium
CVE-2026-61503Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences
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.
Weakness (CWE):
CWE-204
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| rejetto | hfs | 3.0.0 – < 3.2.1 | |
| rejetto | http file server | 3.0.0 – < 3.2.1 |
References and patches
- hfs v3.2.1 Release Notes release-notespatch
- https://www.vulncheck.com/advisories/rejetto-hfs-username-enumeration-via-login-response-differences third-party-advisory