XSS in Roastslav Quickdrop
CVE-2026-35608
QuickDrop is an easy-to-use file sharing application. Prior to 1.5.3, a stored XSS vulnerability exists in the file preview endpoint. The application allows SVG files to be uploaded via the /api/file/upload-chunk endpoint. An attacker can upload a specially crafted SVG file containing a JavaScript payload. When any user views the file preview, the script executes in the context of the application's domain. This vulnerability is fixed in 1.5.3.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.7% 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: 0.003 · change: +0.001
Affected products
- Roastslav Quickdrop — versions < 1.5.3
Weakness classification (CWE)
References
- github.com/RoastSlav/quickdrop/security/advisories/GHSA-f577-ffvv-w6rr (Exploit, Vendor Advisory)
- github.com/RoastSlav/quickdrop/releases/tag/v1.5.3 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-35608?
- CVE-2026-35608 is a medium-severity vulnerability in Roastslav Quickdrop, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-07.
- How severe is CVE-2026-35608?
- Medium severity. CVSS v3 base score is 6.1 out of 10.