CVE-2026-67554

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.

CVSS Vector

References

• https://lists.apache.org/thread/5ndlowz29464ytj98gz9z9ljhwnmb2hm
• http://www.openwall.com/lists/oss-security/2026/08/04/25