CVE-2026-67553

Medium

Description

An authenticated attacker could exceed the session flow control incoming window potentially 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.

SeverityMedium
CVSS6.5
Exploit probability—
ProductApache Qpid Proton-dotnet
PublishedAug 5, 2026
First seenAug 5, 2026

How to fix

Update
  • apache qpid_proton-dotnet1.1.0 or later

Affected products

ProductAffected versionsFixed in
apache qpid_proton-dotnetv < 1.1.01.1.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2026-67553 · Apache Qpid Proton-dotnet · Dark Radar