CVE-2026-61504

MEDIUM 5.4

Rejetto HFS < 3.2.1 Stored XSS via File Names in Basic Web Listing

CVSS Score

5.4

EPSS Score

0.2%

EPSS Percentile

7th

Rejetto HFS 3.0.0 through 3.2.0 does not escape file names in its fallback "basic" web listing, and this listing can be forced by any browser via the ?get=basic parameter. A user with upload permission - or an anonymous user on servers with an open upload folder - can store a file whose name contains script that executes in the browser of anyone viewing the listing.

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:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

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-via-file-names-in-basic-web-listing

Credits

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