CVE-2026-67554

MEDIUM

Apache Qpid Proton Dotnet: Unbounded disposition range handling can lead to denial of service

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-67554 has a selected CVSS score of 6.5 (medium).

Description

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 5, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

Apache Qpid Proton Dotnet

Browse Apache Software Foundation / Apache Qpid Proton Dotnetorg.apache.qpid

Default status: unaffected

CVE ListThrough 1.0.0affected

References

3