CVE-2026-61501: Rejetto HFS < 3.2.1 Stored XSS in Admin Log Viewer

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-13 · updated 2026-10-24
Weakness: CWE-79

Description

Rejetto HFS 3.0.0 through 3.2.0 renders log entries in the administration panel as HTML without sanitization. A remote unauthenticated attacker can submit a failed login with a crafted username that is written to the error log and executes JavaScript in an administrator's browser when the logs are viewed, allowing the attacker to create accounts or execute code on the server with the administrator's privileges.

Affected products

rejetto hfs: from 3.0.0 before 3.2.1 — fixed in 3.2.1

How to fix

Upgrade to a fixed version: rejetto hfs 3.2.1. Check the vendor advisory for mitigations.

References

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