CVE-2026-67465: high-severity vulnerability in Apache Qpid Proton Dotnet
Apache Qpid Proton Dotnet: Unbounded symbol value caching can lead to pre-authentication resource exhaustion
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.8%
A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service.
This issue affects Apache Qpid Proton-Dotnet: through 1.0.0.
Users are recommended to upgrade to version 1.1.0, which fixes the issue.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Apache Software Foundation · Apache Qpid Proton DotnetRelated CVEs — Apache Qpid Proton Dotnet
In the same product, most dangerous first.
CVE-2026-67552HIGHApache Qpid Proton Dotnet: Unbounded type nesting can lead to pre-authentication stackoverflowEPSS 0.8%CVE-2026-67551HIGHApache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authenticationEPSS 0.8%CVE-2026-67555MEDIUMApache Qpid Proton Dotnet: Unable to govern the maximum number of transfer frames per incoming deliveryEPSS 0.7%CVE-2026-67554MEDIUMApache Qpid Proton Dotnet: Unbounded disposition range handling can lead to denial of serviceEPSS 0.7%CVE-2026-67553MEDIUMApache Qpid Proton Dotnet: Incoming session flow control window can be exceededEPSS 0.7%