CVE-2026-67591

Description

An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.

References

• https://lists.apache.org/thread/rwmggh2bkm6qotxpdfcplht3jgw5n036
• http://www.openwall.com/lists/oss-security/2026/08/04/30