CVE-2026-58153: Apache Traffic Server

High severity, CVSS 8.3. EPSS: 0.6% chance of exploitation in the next 30 days.

Apache Traffic Server forwards HTTP/2 origin trailers to HTTP/1 clients without proper chunked framing when converting HTTP/2 to HTTP/1. This issue affects Apache Traffic Server: 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 10.0.0, before 10.1.4 (fixed in 10.1.4)

Published 2026-07-29. Last modified 2026-08-03.