CVE-2026-67551
Published:August 05, 2026
Updated:August 06, 2026
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.
Affected Packages
apache.qpid.proton.client (DOT_NET):
Affected version(s) =1.0.0.0 <1.1.0Fix Suggestion:
Update to version 1.1.0apache.qpid.proton (DOT_NET):
Affected version(s) =1.0.0.0 <1.1.0Fix Suggestion:
Update to version 1.1.0apache.qpid.proton.client (NUGET):
Affected version(s) >=1.0.0-m1 <1.1.0Fix Suggestion:
Update to version 1.1.0apache.qpid.proton (NUGET):
Affected version(s) >=1.0.0-m1 <1.1.0Fix Suggestion:
Update to version 1.1.0Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Memory Allocation with Excessive Size Value