{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "3.14.4"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "9b27347e61454d9f8ca2055f4c67a37dee336e83"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v3.14.4",
                "range": [
                  {
                    "fixed": "c72c7eaaa1337e4ceb611b13e382d6ccb54e4ecb"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c72c7eaaa1337e4ceb611b13e382d6ccb54e4ecb"
            },
            {
              "fixed": "9b27347e61454d9f8ca2055f4c67a37dee336e83"
            }
          ],
          "repo": "https://github.com/aio-libs/aiohttp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-pqxq-w44r-73xw"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-444"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111750.json"
  },
  "details": "AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTP_NO_EXTENSIONS or otherwise runs without a standard wheel and an intermediary interprets the framing differently. This issue is fixed in version 3.14.4.",
  "id": "CVE-2026-111750",
  "modified": "2026-10-21T02:30:50.645573007Z",
  "published": "2026-10-19T17:06:37.997Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111750.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/aio-libs/aiohttp/commit/9b27347e61454d9f8ca2055f4c67a37dee336e83"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-pqxq-w44r-73xw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111750"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "AIOHTTP: Pure-Python parser request smuggling"
}