{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:djangoproject:daphne:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "4.2.0"
              },
              {
                "last_affected": "4.2.1"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "4.2.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "ce3e7f6156a29a3604ca0130ddaed488fbd2eeda"
            },
            {
              "fixed": "c19f2f4301cc0c26fbf7ed2080eace9e76aec3b6"
            }
          ],
          "repo": "https://github.com/django/daphne",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "DSF",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44545.json"
  },
  "details": "daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.",
  "id": "CVE-2026-44545",
  "modified": "2026-07-08T05:38:55.389388137Z",
  "published": "2026-06-03T13:17:42.907Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/django/daphne/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44545.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/django/daphne/blob/main/CHANGELOG.txt"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44545"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/daphne/"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service"
}