CVE-2026-44546 (GCVE-0-2026-44546)

Vulnerability from cvelistv5 – Published: 2026-06-03 13:17 – Updated: 2026-06-03 15:46
VLAI
Title
Header injection via WebSocket upgrade parser differential allows ASGI scope header spoofing
Summary
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.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 15:45 UTC
CWE
  • CWE-444 - (Inconsistent Interpretation of HTTP Requests -- "HTTP Request/Response Smuggling")
Assigner
DSF CNA under the mitre root
CNA scorecard B 86/100 over 21 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
djangoproject daphne Affected: 4.2.0 , ≤ 4.2.1 (python)
Unaffected: 4.2.2 (python)
guessed Create a notification for this product.
Credits
Rene Henningsen Carlton Gibson
Show details on NVD website
To clipboard 

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