XSS in Rejetto Hfs
CVE-2026-61504
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Rejetto Hfs — versions 3.0.0
Weakness classification (CWE)
References
- hfs v3.2.1 Release Notes (release-notes, patch)
- www.vulncheck.com/advisories/rejetto-hfs-stored-xss-via-file-names-in-basic-web… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-61504?
- CVE-2026-61504 is a medium-severity vulnerability in Rejetto Hfs, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-13.
- How severe is CVE-2026-61504?
- Medium severity. CVSS v3 base score is 5.4 out of 10.