{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44546",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-03T15:45:59.459546Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-03T15:46:08.745Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.org/project/daphne/",
          "defaultStatus": "unaffected",
          "packageName": "daphne",
          "product": "daphne",
          "repo": "https://github.com/django/daphne/",
          "vendor": "djangoproject",
          "versions": [
            {
              "lessThanOrEqual": "4.2.1",
              "status": "affected",
              "version": "4.2.0",
              "versionType": "python"
            },
            {
              "status": "unaffected",
              "version": "4.2.2",
              "versionType": "python"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Rene Henningsen"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Carlton Gibson"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003edaphne before 4.2.2 reconstructs a raw HTTP request from Twisted\u0027s parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \u003ccode\u003e\\x0b\u003c/code\u003e, \u003ccode\u003e\\x0c\u003c/code\u003e, \u003ccode\u003e\\x1c\u003c/code\u003e, \u003ccode\u003e\\x1d\u003c/code\u003e, \u003ccode\u003e\\x1e\u003c/code\u003e, or \u003ccode\u003e\\x85\u003c/code\u003e as header line separators, but autobahn decodes header values to \u003ccode\u003estr\u003c/code\u003e and calls \u003ccode\u003esplitlines()\u003c/code\u003e. An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response.\u003c/p\u003e"
            }
          ],
          "value": "daphne before 4.2.2 reconstructs a raw HTTP request from Twisted\u0027s parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \\x0b, \\x0c, \\x1c, \\x1d, \\x1e, or \\x85 as header line separators, but autobahn decodes header values to str and calls splitlines(). An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-33",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-33: HTTP Request Smuggling"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-444",
              "description": "CWE-444 (Inconsistent Interpretation of HTTP Requests -- \"HTTP Request/Response Smuggling\")",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T13:17:55.283Z",
        "orgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
        "shortName": "DSF"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/django/daphne/blob/main/CHANGELOG.txt"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-09T03:00:00.000Z",
          "value": "Initial report received."
        },
        {
          "lang": "en",
          "time": "2026-05-06T03:00:00.000Z",
          "value": "Vulnerability confirmed."
        }
      ],
      "title": "Header injection via WebSocket upgrade parser differential allows ASGI scope header spoofing",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92",
    "assignerShortName": "DSF",
    "cveId": "CVE-2026-44546",
    "datePublished": "2026-06-03T13:17:55.283Z",
    "dateReserved": "2026-05-06T20:29:54.084Z",
    "dateUpdated": "2026-06-03T15:46:08.745Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}