python-daphne: daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory
CVE-2026-44545 is fixed in python-daphne on 1 platform, first by DEBIAN-CVE-2026-44545, released June 29, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-daphne · Debian 13.5 (trixie) | 4.1.2-2+deb13u1 | DEBIAN-CVE-2026-44545 | Jun 29, 2026 |
| python-daphne · Debian 14 | 4.2.2-0.1 | DEBIAN-CVE-2026-44545 | Jun 29, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.