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.
History

Wed, 03 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 14:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: DSF

Published:

Updated: 2026-06-03T15:48:40.018Z

Reserved: 2026-05-06T20:29:54.084Z

Link: CVE-2026-44545

cve-icon Vulnrichment

Updated: 2026-06-03T15:48:37.368Z

cve-icon NVD

Status : Received

Published: 2026-06-03T14:16:43.583

Modified: 2026-06-03T14:16:43.583

Link: CVE-2026-44545

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-03T16:00:16Z