CVE-2026-44546
MEDIUM EPSS 6.9%
Published Jun 3, 20263w ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Published Jun 3, 2026 3w ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
6.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-444
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| djangoproject | daphne | * | <4.2.2 |
References 1
- github.com https://github.com/django/daphne/blob/main/CHANGELOG.txt
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.