CVE-2021-22133: Elastic APM Agent

Low severity, CVSS 2.4. EPSS: 0.5% chance of exploitation in the next 30 days.

The Elastic APM agent for Go versions before 1.11.0 can leak sensitive HTTP header information when logging the details during an application panic. Normally, the APM agent will sanitize sensitive HTTP header details before sending the information to the APM server. During an application panic it is possible the headers will not be sanitized before being sent.

Affected products

• Elastic APM Agent: before 1.11.0 (fixed in 1.11.0)

Published 2021-02-10. Last modified 2026-06-17.