Skip to content
Fencer Intel
medium 5.3

CVE-2026-44545 json

Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service

published 5mo ago modified 3mo ago also GHSA-rrc9-mx66-ffcm , PYSEC-2026-213 , EUVD-2026-34091

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi daphne 4.2.2
  • djangoproject daphne 4.2.2
  • python-daphne Debian 13 4.1.2-2+deb13u1
  • python-daphne Debian 14 4.2.2-0.1

debian advisories DEBIAN-CVE-2026-44545

  • python-django ansible automation platform developer 2.6, ansible automation platform 2.6 5.2.17-1.el10ap
  • python3-django ansible automation platform developer 2.6, ansible automation platform 2.6 5.2.17-1.el10ap
  • python3.12-django ansible automation platform developer 2.6, ansible automation platform 2.6 5.2.17-1.el9ap
  • python3.12-aiohttp ansible automation platform 2.6 3.14.3-1.el9ap
  • python3.12-gitpython ansible automation platform 2.6 3.1.59-1.el9ap
  • automation-platform-ui ansible automation platform 2.6 2.6.13-1.el9ap
  • automation-controller-cli ansible automation platform developer 2.6, ansible automation platform 2.6 4.7.16-1.el9ap
  • automation-controller-venv-tower ansible automation platform 2.6 4.7.16-1.el9ap

red hat advisories RHSA-2026:59136RHSA-2026:50319RHSA-2026:50336

  • py3-daphne Alpine 3.24 4.2.3-r0

alpine advisories ALPINE-CVE-2026-44545

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2026-44545 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-44545 updated cvss 7.5

daphne: daphne: Denial of Service via excessive WebSocket message size

  • Red Hat Ansible Automation Platform 2.5 ansible-automation-platform-25/lightspeed-rhel8 1785430174
    fixed: vendor fix RHSA-2026:50357
  • Red Hat Ansible Automation Platform 2.5 for RHEL 8 python3.12-daphne 4.2.2-1.el8ap Red Hat Ansible Automation Platform 2.5 for RHEL 9 python3.12-daphne 4.2.2-1.el9ap
    fixed: vendor fix RHSA-2026:50319
  • Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/controller-rhel9 1787244009, ansible-automation-platform-26/lightspeed-rhel9 1785775360, ansible-automation-platform-26/eda-controller-rhel9 1785633038
    fixed: vendor fix RHSA-2026:59155
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9 python3.12-daphne 4.2.2-1.el9ap, automation-controller-venv-tower 4.7.16-1.el9ap
    fixed: vendor fix RHSA-2026:59136
  • Red Hat Ansible Automation Platform 2.7 ansible-automation-platform-27/controller-rhel9 1787220257, ansible-automation-platform-27/lightspeed-rhel9 1785375273, ansible-automation-platform-27/eda-controller-rhel9 1785374869
    fixed: vendor fix RHSA-2026:59153
  • Red Hat Ansible Automation Platform 2 python-daphne, python3x-daphne, python3.11-daphne Red Hat Ansible Automation Platform 2.5 ansible-automation-platform-25/hub-rhel8 1785376274, ansible-automation-platform-25/gateway-rhel8 1785374193, ansible-automation-platform-25/hub-web-rhel8 1785456973, ansible-automation-platform-25/receptor-rhel8 1785373835, ansible-automation-platform-25/controller-rhel8 1785376834, ansible-automation-platform-25/de-minimal-rhel8 1785383359, +20 more Red Hat Ansible Automation Platform 2.5 for RHEL 8 receptor 1.6.7-1.el8ap, receptorctl 1.6.7-1.el8ap, automation-hub 4.10.17-1.el8ap, python3.12-pyasn1 0.6.4-1.el8ap, python3.12-pillow 12.3.0-1.el8ap, python3.12-aiohttp 3.14.1-2.el8ap, +17 more Red Hat Ansible Automation Platform 2.5 for RHEL 9 receptor 1.6.7-1.el9ap, receptorctl 1.6.7-1.el9ap, automation-hub 4.10.17-1.el9ap, python3.12-pyasn1 0.6.4-1.el9ap, python3.12-pillow 12.3.0-1.el9ap, python3.12-aiohttp 3.14.1-2.el9ap, +17 more Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/hub-rhel9 1785753568, ansible-automation-platform-26/hub-rhel9 1787220598, ansible-automation-platform-26/gateway-rhel9 1785780020, ansible-automation-platform-26/gateway-rhel9 1787219751, ansible-automation-platform-26/hub-web-rhel9 1785756951, ansible-automation-platform-26/hub-web-rhel9 1787224278, +53 more Red Hat Ansible Automation Platform 2.6 for RHEL 9 receptor 1.6.7-1.el9ap, molecule 26.8.0-1.el9ap, receptorctl 1.6.7-1.el9ap, ansible-lint 26.8.0-1.el9ap, python3.12-nh3 0.3.6-1.el9ap, ansible-creator 26.8.0-1.el9ap, +77 more
    +2 more products
    Red Hat Ansible Automation Platform 2.6 for RHEL 10 receptor 1.6.7-1.el10ap, molecule 26.8.0-1.el10ap, receptorctl 1.6.7-1.el10ap, ansible-lint 26.8.0-1.el10ap, python-django 5.2.17-1.el10ap, python3-django 5.2.17-1.el10ap, +13 more Red Hat Ansible Automation Platform 2.7 ansible-automation-platform-27/hub-rhel9 1785376164, ansible-automation-platform-27/hub-rhel9 1787223293, ansible-automation-platform-27/gateway-rhel9 1785435970, ansible-automation-platform-27/gateway-rhel9 1787218409, ansible-automation-platform-27/hub-web-rhel9 1785379466, ansible-automation-platform-27/hub-web-rhel9 1787225966, +55 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5mo ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
pypi daphne
<4.2.2
4.2.2

Affected products

  • djangoproject daphne

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.