CVE-2026-67554: CWE-606 Unchecked Input for Loop Condition in Apache Software Foundation Apache Qpid Proton Dotnet
CVE-2026-67554 is a denial of service vulnerability in Apache Qpid Proton Dotnet where an authenticated attacker can send a disposition frame with large or illegal ranges. This causes excessive CPU usage due to improper handling of loop conditions. The issue affects versions up to and including 1.0.0. Upgrading to version 1.1.0 resolves the problem.
AI Analysis
Technical Summary
This vulnerability (CWE-606) arises from unchecked input used as a loop condition in Apache Qpid Proton Dotnet. An authenticated attacker can exploit this by crafting a disposition frame containing large or invalid ranges, which leads to excessive CPU consumption and denial of service. The flaw exists in versions up to 1.0.0 and is fixed in version 1.1.0.
Potential Impact
The impact is denial of service caused by excessive CPU usage when processing maliciously crafted disposition frames. There is no impact on confidentiality or integrity. The CVSS score is 6.5 (medium severity) with vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Mitigation Recommendations
Users should upgrade Apache Qpid Proton Dotnet to version 1.1.0 or later, where this issue is fixed. No other mitigations or temporary workarounds are indicated.
CVE-2026-67554: CWE-606 Unchecked Input for Loop Condition in Apache Software Foundation Apache Qpid Proton Dotnet
Description
CVE-2026-67554 is a denial of service vulnerability in Apache Qpid Proton Dotnet where an authenticated attacker can send a disposition frame with large or illegal ranges. This causes excessive CPU usage due to improper handling of loop conditions. The issue affects versions up to and including 1.0.0. Upgrading to version 1.1.0 resolves the problem.
CVSS v3.1
Score 6.5medium
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 (CWE-606) arises from unchecked input used as a loop condition in Apache Qpid Proton Dotnet. An authenticated attacker can exploit this by crafting a disposition frame containing large or invalid ranges, which leads to excessive CPU consumption and denial of service. The flaw exists in versions up to 1.0.0 and is fixed in version 1.1.0.
Potential Impact
The impact is denial of service caused by excessive CPU usage when processing maliciously crafted disposition frames. There is no impact on confidentiality or integrity. The CVSS score is 6.5 (medium severity) with vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Mitigation Recommendations
Users should upgrade Apache Qpid Proton Dotnet to version 1.1.0 or later, where this issue is fixed. No other mitigations or temporary workarounds are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-29T19:06:21.573Z
- State
- PUBLISHED
Threat ID: 6a72d7b2bf8831d5395e845a
Added to database: 08/05/2026, 06:26:58 UTC
Last enriched: 08/12/2026, 15:29:58 UTC
Last updated: 09/17/2026, 22:01:37 UTC
Views: 39
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