CVE-2026-44546 : faille moyenne djangoproject daphne (CVSS 5.3)

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.

Sévérité

Moyenne (CVSS 5.3)

Vecteur CVSS

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation active

Non signalée par la CISA

Publication

3 juin 2026

Dernière mise à jour

22 juil. 2026

• djangoproject daphne

• Fiche CVE-2026-44546 sur le NVD (NIST)
• github.com/django/daphne/blob/main/CHANGELOG.txt