CVE-2026-93712
Severity CVSS v4.0:
Pending analysis
Type:
CWE-22
Path Traversal
Publication date:
22/09/2026
Last modified:
22/09/2026
Description
Dancer2 versions from 2.1.0 before 2.2.0 for Perl serve files from outside public_dir via relative path segments in the File route handler.<br />
<br />
The handler joins the request path onto public_dir without collapsing relative segments, and checks only that the result is a readable regular file. A request for `/../outside.txt` escapes public_dir, and percent-encoding the dots reaches the same file.<br />
<br />
The handler is off by default. An application is affected once it names File in route_handlers and sets static_handler to 0, which otherwise refuses a dot segment before the route runs.<br />
<br />
Any file the worker process can read is served to an unauthenticated request, including the application&#39;s config.yml above public_dir.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH