CVE-2026-67589

HIGH

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

Title source: cna
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0049
EPSS Percentile 39.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-789
Status published
Products (2)
apache/qpid_protonj2 < 1.2.0
Apache Software Foundation/Apache Qpid ProtonJ2 < 1.1.0
Published Aug 05, 2026
Tracked Since Aug 05, 2026