CVE-2026-67551

CVE-2026-67551: Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication

Vendor Apache Software Foundation

Product Apache Qpid Proton Dotnet

Weakness CWE-789

Published August 5, 2026

Last update August 6, 2026

View on NVD All CVEs

CVSS base score

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What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 5, 2026 CVE published

August 6, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-67551 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/789.html AskarLabs — CWE-789 write-up Memory Allocation with Excessive Size Value