CVE-2026-57081
HIGHNet::BitTorrent <= 2.0.1 - Bencode Memory Exhaustion
Title source: manualExploitation Summary
EIP tracks 1 public exploit for CVE-2026-57081. PoCs published by HermesNA-1.
AI-analyzed exploit summary This repository contains an auto-generated stub module for CVE-2026-57081, a memory exhaustion vulnerability in Net::BitTorrent (Perl) versions through 2.0.1. The module includes placeholder code with no functional exploit implementation, only a basic connectivity check and warnings about missing PoC code.
Description
Net::BitTorrent versions through 2.1.0 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 capture the whole remainder, so every live recursion frame keeps its own copy of the shrinking buffer (O(N^2) bytes for an N-deep input). The decoder runs on every untrusted bencode source: .torrent files, BEP09 metadata fetched from peers, DHT messages, and tracker responses. A bencoded input of roughly 150,000 nested lists (about 150 KB on the wire) drives multi-gigabyte peak memory, so one short message from any peer, or one crafted .torrent file or magnet link, terminates the client.
Exploits (1)
This repository contains an auto-generated stub module for CVE-2026-57081, a memory exhaustion vulnerability in Net::BitTorrent (Perl) versions through 2.0.1. The module includes placeholder code with no functional exploit implementation, only a basic connectivity check and warnings about missing PoC code.
References (2)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H