CVE-2026-53917 Details
Description
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.
A memory allocation vulnerability allowing excessive size values has been identified in Apache ActiveMQ, including its All, Client, and Broker distributions. This issue affects versions prior to 5.19.8 and versions from 6.0.0 prior to 6.2.7. The vulnerability allows an authenticated user to cause a denial-of-service condition on the broker by sending a crafted OpenWire message with a large encoded size value for the property map. The absence of size validation during the unmarshal process of OpenWire message property maps can lead to out-of-memory conditions, causing the broker to crash.
Users are advised to upgrade to Apache ActiveMQ version 6.2.7 or 5.19.8, both of which address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/06/29/14 | CVE | Third Party Advisory |
| https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-789 | Memory Allocation with Excessive Size Value | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache activemq | < 5.19.8 >= 6.0.0, < 6.2.7 |
CPE
Remediation
| |
| apache activemq broker | < 5.19.8 >= 6.0.0, < 6.2.7 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 2, 2026 | Initial Analysis | [email protected] |
| Jun 30, 2026 | CVE Modified | CISA-ADP |
| Jun 30, 2026 | CVE Modified | CVE |
| Jun 30, 2026 | New CVE Received | [email protected] |