CVE-2026-67589
Received Received - Intake

Denial of Service in Apache Qpid ProtonJ2

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Apache Software Foundation

Description
A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, 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-2026-67589
EUVD
EUVD-2026-53035

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache qpid_protonj2 to 1.2.0 (exc)
apache qpid_protonj2 1.2.0

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability allows an attacker to cause a denial of service by exploiting improper handling of type size and count in Apache Qpid ProtonJ2 versions before 1.2.0. The attacker can trigger excessive memory allocation without authentication.

Impact Analysis

An attacker could exploit this to crash systems running vulnerable versions of Apache Qpid ProtonJ2, leading to service disruption. Systems using affected versions are at risk of unavailability.

Mitigation Strategies

Upgrade Apache Qpid ProtonJ2 to version 1.2.0 or later to address the vulnerability.

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