CVE-2026-44545: Djangoproject Daphne

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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 products

• Djangoproject Daphne: before 4.2.2 (fixed in 4.2.2)

Published 2026-06-03. Last modified 2026-07-22.