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Vulnerabilities CVE-2026-61503

CVE-2026-61503

Medium
Open
TLP:CLEAR

Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences

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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.

Details

CVSS Score
6.9
EPSS Score
0.34%

27.1th percentile

CVSS Vector
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
Confidence
90%
Published
Jul 13, 2026
Last Modified
Jul 15, 2026
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