CVE-2026-57080: Allocation of Resources Without Limits or Throttling

Net::BitTorrent versions through 2.0.1 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix. The peer-wire framing in processmessages trusts the 4-byte length prefix sent by a connected peer with no upper bound, while receivedata appends every inbound byte to th...

CVE-2026-57079: Improper Limitation of a Pathname to a Restricted Directory

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 BEP...

CVE-2026-57081: Uncontrolled Recursion

Net::BitTorrent versions through 2.0.1 for Perl allow remote memory exhaustion via deeply nested bencoded input. bdecode recurses once per nested list or dictionary level with no depth cap, and each recursive call receives the remaining buffer by value while the list and dictionary branches captu...