CVE-2026-44545 Details
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.
A denial-of-service vulnerability has been identified in Daphne versions prior to 4.2.2. The issue arises because Daphne did not impose limits on WebSocket message or frame sizes, allowing an unauthenticated remote attacker to send excessively large WebSocket messages or frames. This lack of restriction led to significant memory consumption on the server, causing a denial-of-service condition.
Users can upgrade to Daphne version 4.2.2 or later, where this vulnerability has been fixed. Instructions for updating can be found in the project's GitHub repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/django/daphne/blob/main/CHANGELOG.txt | Django Software Foundation | Release Notes |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-770 | Allocation of Resources Without Limits or Throttling | Django Software Foundation |
Affected Products
| Product | Versions |
|---|---|
| djangoproject daphne | < 4.2.2 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | Django Software Foundation |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 15, 2026 | Initial Analysis | [email protected] |
| Jun 3, 2026 | New CVE Received | Django Software Foundation |