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.

Project Subscriptions

Vendors Products
Djangoproject Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 05 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Djangoproject
Djangoproject daphne
Vendors & Products Djangoproject
Djangoproject daphne

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'}


Projects

Sign in to view the affected projects.

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 : Undergoing Analysis

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

Modified: 2026-06-04T15:21:14.080

Link: CVE-2026-44545

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-05T10:11:42Z

Weaknesses