CVE-2026-66277
Received Received - Intake

Denial of Service in Apache Qpid Proton-J

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Apache Software Foundation

Description
It was not possible to govern the maximum number of transfer frames per incoming delivery, enabling an authenticated attacker to cause excessive resource usage and potential denial of service. This issue affects Apache Qpid Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.

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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-2026-66277
EUVD
EUVD-2026-53093

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apache qpid_proton-j to 0.34.1 (inc)
apache qpid_proton-j to 0.35.0 (exc)
apache qpid_proton-j to 0.34.1 (exc)
apache qpid_proton-j 0.35.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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Executive Summary

This vulnerability in Apache Qpid Proton-J allows an authenticated attacker to send excessive transfer frames, consuming too many system resources and potentially causing a denial of service.

Detection Guidance

This vulnerability is specific to Apache Qpid Proton-J versions before 0.35.0. To detect it, check the installed version of Qpid Proton-J using commands like 'qpid-proton-j --version' or inspect package managers such as 'rpm -qa | grep qpid' or 'dpkg -l | grep qpid'.

Impact Analysis

An attacker could exploit this to overload the system, leading to degraded performance or complete service unavailability. Systems running affected versions may become unresponsive.

Compliance Impact

This vulnerability could indirectly impact compliance with GDPR or HIPAA by enabling denial of service attacks, which may disrupt services handling personal or health data. Excessive resource usage could lead to service unavailability, potentially violating availability requirements under these regulations.

Mitigation Strategies

Upgrade Apache Qpid Proton-J to version 0.35.0 or later immediately. Follow your distribution's update process or download the latest version from the official Apache Qpid website.

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