{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "1.61.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "92ad51490479bb8b94720f964b1c67e5a1d68faa"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "92ad51490479bb8b94720f964b1c67e5a1d68faa"
            }
          ],
          "repo": "https://github.com/anacrolix/torrent",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123096.json"
  },
  "details": "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.",
  "id": "CVE-2026-123096",
  "modified": "2026-11-07T02:31:02.032227055Z",
  "published": "2026-11-05T15:11:50.578Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://pkg.go.dev"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123096.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123096"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/anacrolix-torrent-through-1.61.0-memory-exhaustion-via-unbounded-http-tracker-response"
    },
    {
      "type": "FIX",
      "url": "https://github.com/anacrolix/torrent/commit/92ad51490479bb8b94720f964b1c67e5a1d68faa"
    },
    {
      "type": "FIX",
      "url": "https://github.com/anacrolix/torrent/pull/1143"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/anacrolix/torrent"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/anacrolix/torrent/blob/v1.61.0/tracker/http/http.go#L114-L126"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "anacrolix/torrent through 1.61.0 Memory Exhaustion via Unbounded HTTP Tracker Response"
}