CVE-2026-67589

Summary

A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential 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-789: CWE-789 Memory Allocation with Excessive Size Value

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/08/04/28

References

• https://lists.apache.org/thread/bs24x4778dh72xtfs299cy8krvdlo47q

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