CVE-2026-103263
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.2 HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.52% probability · 44th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Source
- disclosure@vulncheck.com
EPSS moved from 0.5% on 2 October 2026 to 0.5% on 26 October 2026.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.