CVE-2026-57079
- Source
- https://cve.org/CVERecord?id=CVE-2026-57079
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57079.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-57079
- Aliases
-
- GHSA-5wc6-r65f-62rr
- Published
- 2026-06-30T11:04:32.211Z
- Modified
- 2026-07-08T08:14:12.863811728Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- Net::BitTorrent versions through 2.0.1 for Perl write files outside the download directory via path traversal in peer-supplied metadata
- Details
-
Net::BitTorrent versions through 2.0.1 for Perl write files outside the download directory via path traversal in peer-supplied metadata.
Net::BitTorrent validates file path components only on the .torrent-file ingest path. The peer and magnet metadata path (onmetadatareceived, reached from the BEP09 utmetadata extension) passes attacker-supplied file names straight to Storage::addfile and Storage::parsefiletree, where Path::Tiny's child() does not collapse "..". A v2 file tree key, a v1 files[].path element, or a single-file name containing ".." segments therefore resolves outside the download directory.
Because the peer also controls the piece hashes and the served bytes, content verification passes, so a malicious magnet or peer writes attacker-chosen content to an attacker-chosen path on the downloading host.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57079.json", "cwe_ids": [ "CWE-22" ], "cna_assigner": "CPANSec" }- References
Affected packages
Git / github.com/sanko/net-bittorrent.pm
Affected ranges
- Type
- GIT
- Repo
- https://github.com/sanko/net-bittorrent.pm
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "source": [ "AFFECTED_FIELD", "DESCRIPTION" ], "extracted_events": [ { "introduced": "0" }, { "last_affected": "2.0.1" }, { "fixed": "2.0.1" } ] }