CVE-2026-57080 (GCVE-0-2026-57080)

Vulnerability from cvelistv5 – Published: 2026-06-30 11:04 – Updated: 2026-07-20 06:42
VLAI
Title
Net::BitTorrent versions through 2.1.0 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix
Summary
Net::BitTorrent versions through 2.1.0 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix. The peer-wire framing in _process_messages trusts the 4-byte length prefix sent by a connected peer with no upper bound, while receive_data appends every inbound byte to the input buffer. A peer announces a length prefix of up to about 4 GiB and then streams bytes; the decoder waits until the buffer holds the full message before processing it, so the buffer grows without limit. Peer connections are unauthenticated, so any peer in the swarm exhausts the downloading process's memory. The largest legitimate message is a 16 KiB piece block, so any announced length far above that is anomalous.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:48 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 61/100 over 362 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
SANKO Net::BitTorrent Affected: 0 , ≤ 2.1.0 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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