https://seclists.org/oss-sec/2026/q2/1063: CVE-2026-53917: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker: Unbounded memory allocation in OpenWiproperty unmarshalling

Published Jun 29, 2026
·
Updated

Affected Software

4 affected components
Apache ActiveMQ>6.0.0<=6.2.7, <5.19.8
Apache ActiveMQ All>6.0.0<=6.2.7, <5.19.8
Apache ActiveMQ Client>6.0.0<=6.2.7, <5.19.8
Apache ActiveMQ Broker>6.0.0<=6.2.7, <5.19.8
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Frequently Asked Questions

1

What is the severity of CVE-2026-53917?

The severity of CVE-2026-53917 is classified as important.

2

Which versions of Apache ActiveMQ are affected by CVE-2026-53917?

CVE-2026-53917 affects Apache ActiveMQ versions prior to 5.19.8 and 6.0.0 before 6.2.7.

3

How do I fix CVE-2026-53917?

To fix CVE-2026-53917, update Apache ActiveMQ to version 5.19.8 or 6.2.7 or later.

4

What type of vulnerability is CVE-2026-53917?

CVE-2026-53917 is an unbounded memory allocation vulnerability found during OpenWiproperty unmarshalling.

5

What impact does CVE-2026-53917 have on Apache ActiveMQ?

CVE-2026-53917 can lead to potential denial-of-service conditions due to excessive memory consumption.

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