CVE-2026-58154: Apache Traffic Server

High severity, CVSS 8.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Apache Traffic Server can write out of bounds or overflow integers while parsing MIME and HTTP headers. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Affected products

• Apache Traffic Server: from 8.0.0, up to and including 8.1.9; from 9.0.0, 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 2026-10-01.