High 7.5Published Aug 5, 2026

CVE-2026-67589Apache Qpid ProtonJ2: Type size/count handling can lead to excessive allocation pre-authentication

Updated under an hour ago (2026-10-19 09:10 UTC)

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It affects Apache Software Foundation Apache Qpid ProtonJ2 and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Apache Software Foundation Apache Qpid ProtonJ2

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-789
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Analyzed
Record last updated: Aug 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache Qpid ProtonJ2 apache_software_foundation:apache_qpid_protonj2 (from the name)	through 1.1.0	CNA record
apache qpid_protonj2 apache:qpid_protonj2	before 1.2.0	NVD

References

https://lists.apache.org/thread/bs24x4778dh72xtfs299cy8krvdlo47qvendor-advisory
http://www.openwall.com/lists/oss-security/2026/08/04/28third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.