Directory traversal vulnerability in html2ps before 1.0b6 allows remote attackers to read arbitrary files via a .. (dot dot) in the "include file" SSI directive. NOTE: this issue only might be a vulnerability in limited scenarios, such as if html2ps is invoked by a web application, or if a user-assisted attacker provides filenames whose contents could cause a denial of service, such as certain devices.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.