CVE-2026-57079: Net::BitTorrent 0 to before 2.1.0

Affected technology

Net::BitTorrent · 0 to before 2.1.0
SANKO

Description’s affected range: versions before 2.1.0 for Perl write files outside the download directory via path traversal in peer-supplied metadata

Component: Not specified by the source
Function: Net::BitTorrent::Torrent::_on_metadata_received, Net::BitTorrent::Storage::add_file, Net::BitTorrent::Storage::_parse_file_tree
File: lib/Net/BitTorrent/Torrent.pm, lib/Net/BitTorrent/Storage.pm, lib/Net/BitTorrent/Storage/File.pm

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 5.3/10) rates confidentiality impact as low; integrity and availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.