CVE-2026-103263
Tornado before 6.5.9 contains a path traversal vulnerability in StaticFileHandler that follows…
- Risk score
- 49/100
- CVSS
- 5.9 v3.1
- Exploit chance (30 days)
- 0.5%
- Published
- 1 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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…
- Affected
- Canonical Ubuntu Linux before 6.5.9
- Fix
- Upgrade Canonical Ubuntu Linux to 6.5.9 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 5.9 medium
- Named in a government or vendor bulletin
Government and vendor bulletins
References
- https://ubuntu.com/security/notices/USN-8952-1
- https://github.com/tornadoweb/tornado/commit/437ab5f76565403b3403438d2e555d11f8128d32
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-c2m8-h5v5-343r
- https://www.vulncheck.com/advisories/tornado-before-6.5.9-staticfilehandler-path-traversal-via-symlink
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-c2m8-h5v5-343r
Original description
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.
Last activity 22 Oct 2026. Patch Forecast updates every hour.