CVE-2021-38161: Apache Traffic Server

High severity, CVSS 8.1. EPSS: 2% chance of exploitation in the next 30 days.

Improper Authentication vulnerability in TLS origin verification of Apache Traffic Server allows for man in the middle attacks. This issue affects Apache Traffic Server 8.0.0 to 8.0.8.

Affected products

• Apache Traffic Server: from 8.0.0, up to and including 8.0.8
• Debian Debian Linux: version 10.0 only; version 11.0 only

Published 2021-11-03. Last modified 2026-06-17.