Tornado before 6.5.9 StaticFileHandler Path Traversal via Symlink
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.
CVE-2026-103263
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103263
tornado
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "tornadoweb",
"product": "tornado",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "6.5.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.5.9",
"versionType": "semver"
}
],
"packageURL": "pkg:pypi/tornado",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-103263
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #7700 · Revision 1
- Added to Heist Feed
- Publisher date