CVE-2021-22097: VMware Spring Advanced Message Queuing Protocol

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.

Affected products

• VMware Spring Advanced Message Queuing Protocol: from 2.2.0, up to and including 2.2.18; from 2.3.0, up to and including 2.3.10

Published 2021-10-28. Last modified 2026-06-17.