PT-2026-53845 · Apache · Apache Activemq+3

Tonghuaroot · Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-53917

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker.

An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validation which can trigger OOM and crash the broker. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7.

Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

Fix

Weakness Enumeration

CWE-789

Related Identifiers

CVE-2026-53917

Affected Products

Apache Activemq

Apache Activemq Apollo

Apache Activemq Broker

Apache Activemq Client

References · 3

• https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-53917 · Security Note
• http://openwall.com/lists/oss-security/2026/06/29/14 · Note