CVE-2026-67551

HIGH

Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication

Title source: cna
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0037
EPSS Percentile 30.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-789
Status published
Products (1)
Apache Software Foundation/Apache Qpid Proton Dotnet < 1.0.0
Published Aug 05, 2026
Tracked Since Aug 05, 2026