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

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0074, the 54th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 30 Jun 2026, 12:31 UTC Confirmed by GitHub Advisory Database
2. 4 Nov 2026, 16:15 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-f77w-px59-cqf5
• OSV: GHSA-f77w-px59-cqf5
• nvd.nist.gov/vuln/detail/CVE-2026-53917
• github.com/apache/activemq/pull/2136
• github.com/apache/activemq/commit/78bb8dcdc32e80c8b8813b57f89147572d16a2b9
• github.com/apache/activemq/commit/b20e61c7ef736a04ad07a934ea8de628550c6cf2
• github.com/apache/activemq/commit/ecfd1336fa3f3f6116a78f0ab71d1b2f90bc717f
• github.com/apache/activemq
• github.com/apache/activemq/releases/tag/activemq-5.19.8
• github.com/apache/activemq/releases/tag/activemq-6.2.7
• lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx
• www.openwall.com/lists/oss-security/2026/06/29/14

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.