CVE-2026-67551
Received Received - Intake

Excessive Allocation in Apache Qpid Proton-Dotnet

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Apache Software Foundation

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-67551
EUVD
EUVD-2026-53057

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache qpid_proton_dotnet to 1.1.0 (exc)
apache qpid_proton_dotnet 1.1.0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-789 The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability allows a pre-authentication attacker to exploit improper handling of type size and count in Apache Qpid Proton-Dotnet versions up to 1.0.0. By manipulating these values, the attacker can trigger excessive memory allocation, leading to a denial of service condition.

Impact Analysis

If you use Apache Qpid Proton-Dotnet through version 1.0.0, an attacker could exploit this flaw to crash your application or system by consuming excessive memory, disrupting normal operations.

Mitigation Strategies

Upgrade Apache Qpid Proton-Dotnet to version 1.1.0 or later to address the vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-67551. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart