CVE-2026-66273 — Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication

CVE-2026-66273

Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication PUBLISHED

Description (CNA)

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 Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Qpid Proton-J	affected 0 through 0.34.1

CWE

CWE-789

References

https://lists.apache.org/thread/z34s9v5w05qk4qqtz5fs3v9wpxz6fnbh

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/08/04/9

CISA-ADP

No English description supplied.

No references supplied.