AIKIDO-2026-11079
daphne is vulnerable to Allocation of Resources Without Limits or Throttling
53
Medium Risk
This Affects:
daphneTL;DR
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.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
daphne is vulnerable to Allocation of Resources Without Limits or Throttling in versions 0.9.3 - 4.2.1.
How to fix this
Upgrade the daphne library to the patch version.
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