What is CVE-2017-6503?

CVE-2017-6503 is a medium-severity vulnerability in Qbittorrent, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-03-06.

How severe is CVE-2017-6503?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Qbittorrent

CVE-2017-6503

WebUI in qBittorrent before 3.3.11 did not escape many values, which could potentially lead to XSS.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-03-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.0th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Qbittorrent

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/qbittorrent/qBittorrent/commit/6ca3e4f094da0a0017cb2d483ec1db6176bb0… (Patch)
www.securityfocus.com/bid/96758 (vdb-entry)
www.qbittorrent.org/news.php (Patch, Release Notes)

Frequently asked questions

What is CVE-2017-6503?: CVE-2017-6503 is a medium-severity vulnerability in Qbittorrent, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-03-06.
How severe is CVE-2017-6503?: Medium severity. CVSS v3 base score is 6.1 out of 10.