{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.4.9.3-alpha"
              },
              {
                "fixed": "0.4.9.12"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "1ee22f8f9a98719d32e5e4056013b68054b6448d"
            },
            {
              "fixed": "78923280eed3eff6a77910bba59ecc1fa2244e02"
            }
          ],
          "repo": "https://gitlab.com/torproject/tor",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-669"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87724.json"
  },
  "details": "Tor before 0.4.9.12 interprets the CC_RESPONSE extension even when CC_REQUEST was not sent, which allows remote attackers to cause a denial of service (crash) because of corrupted congestion-control state. This is TROVE-2026-032.",
  "id": "CVE-2026-87724",
  "modified": "2026-09-11T03:30:48.916496536Z",
  "published": "2026-09-09T01:29:46.295Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.12/ChangeLog"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87724.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87724"
    },
    {
      "type": "FIX",
      "url": "https://gitlab.com/torproject/tor/-/commit/10d4b8ffefa7c00aab2b631ed7e7f15e42cd012d"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ]
}