Vulnerabilities in pkg:pypi/aiohttp

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cq5v-8q36-5273",
  "modified" : "2026-08-03T20:51:13Z",
  "published" : "2026-08-03T20:51:13Z",
  "aliases" : [ "CVE-2026-69244" ],
  "summary" : "AIOHTTP: Out-of-bounds heap read in C HTTP response parser error path (malformed chunked response)",
  "details" : "### Summary\n\nAn out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response.\n\n### Impact\n\nAn attacker controlled server, or possibly an accidental response could trigger a DoS in the client.\n\n### Workaround\n\nIf unable to upgrade, the Python parser is unaffected and can be used with `AIOHTTP_NO_EXTENSIONS=1`.\n\n---\n\nPatch: https://github.com/aio-libs/aiohttp/commit/49f65d54150397892f7bcc4aae887767d51c322d",
  "severity" : [ {
    "type" : "CVSS_V4",
    "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "aiohttp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.14.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.14.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-cq5v-8q36-5273"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/aio-libs/aiohttp/pull/13223"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/aio-libs/aiohttp/commit/49f65d54150397892f7bcc4aae887767d51c322d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/aio-libs/aiohttp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/aio-libs/aiohttp/releases/tag/v3.14.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125", "CWE-400", "CWE-416" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-03T20:51:13Z",
    "nvd_published_at" : null
  }
}