Bug 2511330 (CVE-2026-67551) - CVE-2026-67551 Apache Qpid Proton-Dotnet: Apache Qpid Proton Dotnet: Denial of Service via excessive memory allocation
Summary: CVE-2026-67551 Apache Qpid Proton-Dotnet: Apache Qpid Proton Dotnet: Denial o...
Keywords:
Status: NEW
Alias: CVE-2026-67551
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-05 06:01 UTC by OSIDB Bzimport
Modified: 2026-09-21 14:40 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:69459 0 None None None 2026-09-21 14:40:21 UTC

Description OSIDB Bzimport 2026-08-05 06:01:49 UTC 
pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service.

This issue affects Apache Qpid Proton-Dotnet: through 1.0.0.

Users are recommended to upgrade to version 1.1.0, which fixes the issue.
Comment 2 Jon Orris 2026-09-21 14:40:20 UTC 
This issue has been addressed in the following products:

  AMQ Clients 2026.Q3

Via RHSA-2026:69459 https://access.redhat.com/errata/RHSA-2026:69459
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