CVE-2026-44545
Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.
| CWE | CWE-770 |
| Vendor | djangoproject |
| Product | daphne |
| Published | Jun 3, 2026 |
| Last Updated | Jun 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
djangoproject / daphne
4.2.0 ≤ 4.2.1
References
Credits
🔍 ParkHyunWoo Carlton Gibson