CVE-2026-103263: Tornadoweb Tornado

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

Tornado before 6.5.9 contains a path traversal vulnerability in StaticFileHandler that follows symbolic links inside the static root without confirming the resolved target stays within it. When a symlink pointing outside the static directory exists inside it, unauthenticated attackers can request it to read files such as configuration files, private keys, and application secrets accessible to the process user.

Affected products

• Tornadoweb Tornado: before 6.5.9 (fixed in 6.5.9)

Published 2026-10-01. Last modified 2026-10-01.