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CVE-2026-57081

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, B
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:64bae9fa2cba02f6dd5bbc28413b1ad7b6d3f690bd49e2e754c83ad1b72227a7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Net-BitTorrent","product":"Net::BitTorrent","programFiles":["lib/Net/BitTorrent/Protocol/BEP03/Bencode.pm"],"programRoutines":[{"name":"Net::BitTorrent::Protocol::BEP03::Bencode::bdecode"}],"repo":"https://github.com/sanko/Net-BitTorrent.pm","vendor":"SANKO","versions":[{"lessThanOrEqual":"2.1.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["vendor-advisory"],"url":"https://github.com/sanko/Net-BitTorrent.pm/security/advisories/GHSA-mv44-v82p-89xv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://metacpan.org/release/SANKO/Net-BitTorrent-v2.1.0/changes"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fbdc9895d169b78202bdea0f81bde19acd2433d6c00adc5de4fccc57f1433e75 · sha256:334415a52ae2aed2… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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