CVE-2026-66273: CWE-789 Memory Allocation with Excessive Size Value in Apache Software Foundation Apache Qpid Proton-J
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 Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.
AI Analysis
Technical Summary
This vulnerability (CWE-789) in Apache Qpid Proton-J involves improper handling of type size/count values that can be exploited by a pre-authentication attacker to trigger excessive memory allocation. This can cause a denial of service condition by exhausting system resources. The affected versions are all releases up to and including 0.34.1. The issue is resolved in version 0.35.0, which users are advised to upgrade to.
Potential Impact
An attacker can cause excessive memory allocation without authentication, potentially leading to denial of service by exhausting system memory or causing application instability. There is no indication of code execution or data disclosure from the provided information.
Mitigation Recommendations
Users should upgrade Apache Qpid Proton-J to version 0.35.0 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
CVE-2026-66273: CWE-789 Memory Allocation with Excessive Size Value in Apache Software Foundation Apache Qpid Proton-J
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 Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.
Affected software
pkg:maven/Apache Software Foundation/org.apache.qpid:proton-jRun 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-789) in Apache Qpid Proton-J involves improper handling of type size/count values that can be exploited by a pre-authentication attacker to trigger excessive memory allocation. This can cause a denial of service condition by exhausting system resources. The affected versions are all releases up to and including 0.34.1. The issue is resolved in version 0.35.0, which users are advised to upgrade to.
Potential Impact
An attacker can cause excessive memory allocation without authentication, potentially leading to denial of service by exhausting system memory or causing application instability. There is no indication of code execution or data disclosure from the provided information.
Mitigation Recommendations
Users should upgrade Apache Qpid Proton-J to version 0.35.0 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-24T11:27:24.425Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a72cd1dbf8831d5394f40b9
Added to database: 08/05/2026, 05:41:49 UTC
Last enriched: 08/05/2026, 05:58:12 UTC
Last updated: 08/06/2026, 00:41:14 UTC
Views: 3
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