{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-123096","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-05T12:22:13.477Z","datePublished":"2026-11-05T15:11:50.578Z","dateUpdated":"2026-11-05T15:11:50.578Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-05T15:11:50.578Z"},"datePublic":"2026-10-19T00:00:00.000Z","title":"anacrolix/torrent through 1.61.0 Memory Exhaustion via Unbounded HTTP Tracker Response","descriptions":[{"lang":"en","value":"anacrolix/torrent through 1.61.0 contains a memory exhaustion vulnerability in the tracker/http package that allows malicious trackers to crash clients by returning unbounded responses. Attackers controlling an HTTP tracker in a torrent file or magnet link can return huge or gzip-compressed announce or scrape responses that Client.Announce and Client.Scrape buffer without limits, exhausting process memory."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Allocation of Resources Without Limits or Throttling","cweId":"CWE-770","type":"CWE"}]}],"affected":[{"vendor":"anacrolix","product":"torrent","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"1.61.0","status":"affected","versionType":"semver"}],"packageURL":"pkg:golang/github.com/anacrolix/torrent","collectionURL":"https://pkg.go.dev","repo":"https://github.com/anacrolix/torrent"}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:torrentflux_project:torrentflux:*:*:*:*:*:*:*:*","versionEndIncluding":"1.61.0"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/anacrolix/torrent/pull/1143","tags":["issue-tracking","patch"]},{"url":"https://github.com/anacrolix/torrent/commit/92ad51490479bb8b94720f964b1c67e5a1d68faa","tags":["patch"]},{"url":"https://github.com/anacrolix/torrent/blob/v1.61.0/tracker/http/http.go#L114-L126","tags":["technical-description"]},{"url":"https://github.com/anacrolix/torrent","tags":["product"]},{"name":"VulnCheck Advisory: anacrolix/torrent through 1.61.0 Memory Exhaustion via Unbounded HTTP Tracker Response","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/anacrolix-torrent-through-1.61.0-memory-exhaustion-via-unbounded-http-tracker-response"}],"credits":[{"lang":"en","value":"Reload3d","type":"finder"},{"lang":"en","value":"Matt Joiner (anacrolix)","type":"remediation developer"}],"x_generator":{"engine":"vulncheck-endgame"}}}}