PT-2026-65463 · Apache · Apache Activemq+2

CVE-2026-59878 · Published 2026-07-28 · Updated 2026-07-28

Mitre

CVSS v3.1

7.5

High

Base vector

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

Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All.

A remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections. This issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8.

Users are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-59878

Affected Products

Apache Activemq

Apache Activemq Amqp

Apache Activemq Apollo

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-59878 · Security Note
• https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn · Vendor Advisory
• http://openwall.com/lists/oss-security/2026/07/27/7 · Note