CVE-2026-67554: An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial…

PriorityP433medium6.5CVSS 3.1

AVNACLPRLUINSUCNINAH

EPSS

0.41%

34.5th percentile

An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, 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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apache	qpid_proton-dotnet	< 1.1.0	1.1.0
apache_software_foundation	apache_qpid_proton_dotnet	<= 1.0.0	—

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