CVE-2026-66277: medium-severity vulnerability in Apache Qpid Proton-J
Apache Qpid Proton-J: Unable to govern the maximum number of transfer frames per incoming delivery
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.7%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Apache Software Foundation · Apache Qpid Proton-JRelated CVEs — Apache Qpid Proton-J
In the same product, most dangerous first.
CVE-2018-17187—CVE-2018-17187EPSS 2.5%CVE-2026-66274HIGHApache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflowEPSS 0.8%CVE-2026-66273HIGHApache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authenticationEPSS 0.8%CVE-2026-66257HIGHApache Qpid Proton-J: Unbounded symbol value caching can lead to pre-authentication resource exhaustionEPSS 0.8%CVE-2026-66276MEDIUMApache Qpid Proton-J: Unbounded disposition range handling can lead to denial of serviceEPSS 0.7%CVE-2026-66275MEDIUMApache Qpid Proton-J: Incoming session flow control window can be exceededEPSS 0.7%