CVE-2026-67591

Summary

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.

Affected Software

Weaknesses

• CWE-770: CWE-770 Allocation of Resources Without Limits or Throttling

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/08/04/30

References

• https://lists.apache.org/thread/rwmggh2bkm6qotxpdfcplht3jgw5n036

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