Vulnerability · Published Aug 5, 2026 · Assigned by apache
CVE-2026-66277Apache Qpid Proton-J: Unable to govern the maximum number of transfer frames per incoming delivery
Medium 6.5
In plain English
A medium-severity resource allocation without limits in Apache Qpid Proton-J from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Qpid Proton-J | 0 – through 0.34.1 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H