Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All has a 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-7259-vf48-52q3
• OSV: GHSA-7259-vf48-52q3
• nvd.nist.gov/vuln/detail/CVE-2026-50734
• github.com/apache/activemq/pull/2080
• github.com/apache/activemq/commit/42e2be75eddcece3cddacf8a73e6cad7db5aa626
• github.com/apache/activemq/commit/6fc46e520bac7d9763ba5762cc2de603f19ed517
• github.com/apache/activemq/commit/e25f9b88898ef7cdfac9e855f4559a1ad0a6da12
• 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/nxso951fnvf72qf9m475mpz4yf931xk0
• www.openwall.com/lists/oss-security/2026/06/29/10

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.