CVE-2026-61503: medium-severity vulnerability in rejetto hfs
Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.4%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
rejetto · hfsRelated CVEs — rejetto hfs
In the same product, most dangerous first.
CVE-2026-61500CRITICALRejetto HFS < 3.2.1 Session Forgery via Predictable Signing KeyEPSS 1.9%CVE-2026-61505MEDIUMRejetto HFS < 3.2.1 Limited File Disclosure via Path Traversal in lang ParameterEPSS 0.5%CVE-2026-61501MEDIUMRejetto HFS < 3.2.1 Stored XSS in Admin Log ViewerEPSS 0.4%CVE-2026-61504MEDIUMRejetto HFS < 3.2.1 Stored XSS via File Names in Basic Web ListingEPSS 0.2%CVE-2026-61502MEDIUMRejetto HFS < 3.2.1 Cross-Site Request Forgery via GET RequestsEPSS 0.2%