CVE-2026-61501

MEDIUM 6.1

Rejetto HFS < 3.2.1 Stored XSS in Admin Log Viewer

CVSS Score

6.1

EPSS Score

0.3%

EPSS Percentile

23th

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.

CWE	CWE-79
Vendor	rejetto
Product	hfs
Published	Jul 13, 2026
Last Updated	Jul 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

rejetto / hfs

3.0.0 < 3.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rejetto/hfs/releases/tag/v3.2.1 vulncheck.com: https://www.vulncheck.com/advisories/rejetto-hfs-stored-xss-in-admin-log-viewer

Credits

Zach Hanley (@hacks_zach) of Horizon3.ai, in collaboration with Claude and Anthropic Research