DEBIAN-CVE-2026-44546
daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's 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.
DEBIAN-CVE-2026-44546
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-44546
python-daphne
Source reference: /affected/0/package/name
- Affected versions
- 4.0.0-1
Source reference:
/affected/0/versions4.1.2-1Source reference:
/affected/0/versions4.1.2-2Source reference:
/affected/0/versions4.2.1-1Source reference:
/affected/0/versions4.2.1-2Source reference:
/affected/0/versions4.2.2-0.1Source reference:
/affected/0/versions4.2.3-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
python-daphne
Source reference: /affected/1/package/name
- Affected versions
- 4.1.2-2
Source reference:
/affected/1/versions - Fixed versions
- 4.1.2-2+deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
python-daphne
Source reference: /affected/2/package/name
- Affected versions
- 4.1.2-2
Source reference:
/affected/2/versions4.2.1-1Source reference:
/affected/2/versions4.2.1-2Source reference:
/affected/2/versions - Fixed versions
- 4.2.2-0.1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "python-daphne",
"purl": "pkg:deb/debian/python-daphne?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.0.0-1",
"4.1.2-1",
"4.1.2-2",
"4.2.1-1",
"4.2.1-2",
"4.2.2-0.1",
"4.2.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44546.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.2-2+deb13u1"
}
]
}
],
"package": {
"name": "python-daphne",
"purl": "pkg:deb/debian/python-daphne?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.1.2-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44546.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.2.2-0.1"
}
]
}
],
"package": {
"name": "python-daphne",
"purl": "pkg:deb/debian/python-daphne?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.1.2-2",
"4.2.1-1",
"4.2.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44546.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57023 · Revision 1
- Added to Heist Feed
- Publisher date