CVE-2026-44545
Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service
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.
INFO
Published Date :
June 3, 2026, 2:16 p.m.
Last Modified :
June 3, 2026, 2:16 p.m.
Remotely Exploit :
Yes !
Source :
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Affected Products
The following products are affected by CVE-2026-44545
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Daphne to version 4.2.2 or later.
- Configure payload size limits if applicable.
- Monitor system resource usage.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44545.
| URL | Resource |
|---|---|
| https://github.com/django/daphne/blob/main/CHANGELOG.txt |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44545 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44545
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44545 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44545 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
Jun. 03, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Added CWE CWE-770 Added Reference https://github.com/django/daphne/blob/main/CHANGELOG.txt