VDB
DEBIAN-CVE-2025-67724
DEBIAN-CVE-2025-67724
PUBLISHED
CVSS 6.099999904632568 MEDIUM
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.
Risk Scores
CVSS v3.1
6.099999904632568
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | python-tornado | 6.2.0-3, 6.2.0-3+deb12u1, 6.2.0-3+deb12u3 |
| Debian:14 | python-tornado | 6.5.2-1, 0, 6.4.2-3 |
| Debian:13 | python-tornado | 0, 6.4.2-3, 6.4.2-3+deb13u1 |
| Debian:11 | python-tornado | 6.1.0-1, 0, 6.1.0-1 |
Timeline
- Dec 12, 2025 CVE Published
- Apr 28, 2026 CVE Updated