Path Traversal in Webtorrent
CVE-2026-124582
A vulnerability was identified in WebTorrent up to 2.8.5/3.0.21. Affected by this vulnerability is the function getFileModtimes of the file torrent.js of the component File Path Handler. Such manipulation of the argument file.path leads to path traversal. The attack may be performed from remote. The exploit is publicly available and might be used. The reported GitHub issue was closed with the label "not planned".
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (37.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Webtorrent — versions 2.8.0, 2.8.1, 2.8.2
Weakness classification (CWE)
References
- vuldb.com/vuln/432939 (technical-description, vdb-entry)
- vuldb.com/vuln/432939/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-124582 (third-party-advisory)
- vuldb.com/submit/1039255 (third-party-advisory)
- github.com/webtorrent/webtorrent/issues/3012 (issue-tracking, exploit)
- github.com/webtorrent/webtorrent/pull/3046 (issue-tracking, patch)
- github.com/webtorrent/webtorrent/ (product)
Frequently asked questions
- What is CVE-2026-124582?
- CVE-2026-124582 is a medium-severity vulnerability in Webtorrent, classified under Path Traversal. CVSS score: 4.3/10. Published 2026-11-09.
- How severe is CVE-2026-124582?
- Medium severity. CVSS v3 base score is 4.3 out of 10.