Bug 2484377 (CVE-2026-44545) - CVE-2026-44545 daphne: daphne: Denial of Service via excessive WebSocket message size
Summary: CVE-2026-44545 daphne: daphne: Denial of Service via excessive WebSocket mess...
Keywords:
Status: NEW
Alias: CVE-2026-44545
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2498955
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-03 15:02 UTC by OSIDB Bzimport
Modified: 2026-08-24 16:27 UTC (History)
13 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:50319 0 None None None 2026-08-04 17:57:45 UTC
Red Hat Product Errata RHSA-2026:50336 0 None None None 2026-08-04 18:44:04 UTC
Red Hat Product Errata RHSA-2026:59136 0 None None None 2026-08-24 16:27:23 UTC

Description OSIDB Bzimport 2026-06-03 15:02:11 UTC 
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.
Comment 4 errata-xmlrpc 2026-08-04 17:57:42 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:50319 https://access.redhat.com/errata/RHSA-2026:50319
Comment 5 errata-xmlrpc 2026-08-04 18:44:03 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 9
  Red Hat Ansible Automation Platform 2.6 for RHEL 10

Via RHSA-2026:50336 https://access.redhat.com/errata/RHSA-2026:50336
Comment 6 errata-xmlrpc 2026-08-24 16:27:21 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 9
  Red Hat Ansible Automation Platform 2.6 for RHEL 10

Via RHSA-2026:59136 https://access.redhat.com/errata/RHSA-2026:59136
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