{
"id": "GHSA-rrc9-mx66-ffcm",
"aliases": [
"CVE-2026-44545"
],
"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.",
"summary": "daphne: Unauthenticated attackers can cause excessive memory consumption by sending arbitrarily large WebSocket messages/frames",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.2.2"
}
]
}
],
"package": {
"name": "daphne",
"ecosystem": "PyPI"
}
}
],
"modified": "2026-07-11T22:53:33Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"published": "2026-06-03T15:30:42Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44545",
"type": "ADVISORY"
},
{
"url": "https://github.com/django/daphne",
"type": "PACKAGE"
},
{
"url": "https://github.com/django/daphne/blob/main/CHANGELOG.txt",
"type": "WEB"
},
{
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/daphne/PYSEC-2026-213.yaml",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-770"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-06-03T14:16:43Z",
"github_reviewed_at": "2026-07-11T22:53:32Z"
}
}