CVE-2026-44545 Affecting python-daphne package, versions <4.1.2-2+deb13u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.57% (45th percentile)

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  • Snyk IDSNYK-DEBIAN13-PYTHONDAPHNE-17140248
  • published4 Jun 2026
  • disclosed3 Jun 2026

Introduced: 3 Jun 2026

CVE-2026-44545  (opens in a new tab)

How to fix?

Upgrade Debian:13 python-daphne to version 4.1.2-2+deb13u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-daphne package and not the python-daphne package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1