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Path Traversal occurrences in Htmly
Directory Traversal vulnerability in htmly before 2.8.1 allows remote attackers to perform arbitrary file deletions via modified file parameter. (2022-09-30, CVE-2021-33354)
htmly v2.8.1 was discovered to contain an arbitrary file deletion vulnerability via the component \views\backup.html.php. (2022-08-26, CVE-2021-40285)
An arbitrary file deletion vulnerability was discovered on htmly v2.7.5 which allows remote attackers to use any absolute path to delete any file in the server should they gain Administrator privileges. (2021-05-21, CVE-2020-23766)
Why Path Traversal can be dangerous
Relative Path Confusion means that your web server is configured to serve responses to ambiguous URLs. This configuration can possibly cause confusion about the correct relative path for the URL. It is also an issue of resources, such as images, styles etc., which are specified in the response using relative path, not the absolute URL.
If the web browser permits to parse "cross-content" response, the attacker may be able to fool the web browser into interpreting HTML into other content types, which can then lead to a cross site scripting attack (link do XSS).