CVEvulnerability

CVE-2026-44546

5.3 MEDIUM Published 2026-06-03 Modified 2026-07-22 Official page ↗
Status
Analyzed
Published
2026-06-03
Last modified
2026-07-22
Assigner
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
CVSS 3.1 (6a34fbeb-21d4-45e7-8e0a-62b95bc12c92)
3.7 LOW — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-444

Description

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.

Affected configurations

• djangoproject daphne (< 4.2.2)

Related

Weakness · CWE (1)

  • CWE-444 Inconsistent Interpretation of HTTP Requests weakness

References