medium5.3
CVE-2026-44545
daphne: Unauthenticated attackers can cause excessive memory consumption by sending arbitrarily large WebSocket messages/frames
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | daphne | < 4.2.2 | 4.2.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Djangoproject | Daphne | before 4.2.2 |