CVE-2026-67551: CWE-789 Memory Allocation with Excessive Size Value in Apache Software Foundation Apache Qpid Proton Dotnet
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-67551) in Apache Qpid Proton Dotnet involves improper handling of type size and count values, which can be manipulated by an unauthenticated attacker to trigger excessive memory allocation. This excessive allocation can cause a denial of service by exhausting system resources. The flaw is classified under CWE-789 (Memory Allocation with Excessive Size Value). It affects all versions before 1.1.0. The vendor has addressed the issue in version 1.1.0.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to cause excessive memory allocation, potentially leading to denial of service by exhausting system resources. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Users should upgrade Apache Qpid Proton Dotnet to version 1.1.0 or later, which contains the fix for this vulnerability. No other mitigation or temporary workaround is indicated.
CVE-2026-67551: CWE-789 Memory Allocation with Excessive Size Value in Apache Software Foundation Apache Qpid Proton Dotnet
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 v3.1
Score 7.5high
Affected software
Apache Software Foundation
Apache Qpid Proton Dotnet
pkg:nuget/apache.qpid.proton.dotnetRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-67551) in Apache Qpid Proton Dotnet involves improper handling of type size and count values, which can be manipulated by an unauthenticated attacker to trigger excessive memory allocation. This excessive allocation can cause a denial of service by exhausting system resources. The flaw is classified under CWE-789 (Memory Allocation with Excessive Size Value). It affects all versions before 1.1.0. The vendor has addressed the issue in version 1.1.0.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to cause excessive memory allocation, potentially leading to denial of service by exhausting system resources. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Users should upgrade Apache Qpid Proton Dotnet to version 1.1.0 or later, which contains the fix for this vulnerability. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-29T18:47:20.800Z
- State
- PUBLISHED
Threat ID: 6a72cd1dbf8831d5394f40c9
Added to database: 08/05/2026, 05:41:49 UTC
Last enriched: 08/12/2026, 14:55:32 UTC
Last updated: 09/18/2026, 01:18:56 UTC
Views: 34
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.