{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apple:swiftnio_http\\/2:*:*:*:*:*:swift:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.45.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "45bdf670248be5f16ec0340e125dca285536f0fb"
            }
          ],
          "repo": "https://github.com/apple/swift-nio-http2",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-q3g2-m552-3r9c"
  ],
  "database_specific": {},
  "details": "SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. This vulnerability is addressed in swift-nio-http2 version 1.45.0.",
  "id": "CVE-2026-64785",
  "modified": "2026-09-03T03:30:32.007999281Z",
  "published": "2026-07-23T20:17:21.440Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}