CVE-2026-33267: Apache Traffic Server

Critical severity, CVSS 9.1. EPSS: 0.6% chance of exploitation in the next 30 days.

Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.14, from 10.1.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

Affected products

• Apache Traffic Server: from 9.2.0, before 9.2.15 (fixed in 9.2.15); from 10.0.0, before 10.1.4 (fixed in 10.1.4)

Published 2026-07-29. Last modified 2026-08-05.