CVE-2026-111809
Apache Traffic Server: HEAD requests carrying Content-Length or Transfer-Encoding enable request smuggling
- Published
- Last modified
- Status
- published
- Known exploitation
- Not listed in CISA KEV
- Public exploit
- None on Exploit-DB
Summary
Apache Traffic Server allows request smuggling via HEAD requests that carry Content-Length or Transfer-Encoding. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
Affected versions
- Apache Software Foundation Apache Traffic Server
From 8.0.0 · through 8.1.11; From 9.0.0 · through 9.2.15; From 10.0.0 · through 10.1.4