The vulnerability of the get_var function in the library for syntax highlighting in the original GeSHi code allows attackers to perform cross-site scripting (XSS) attacks.

The vulnerability of the getvar function in the GeSHi library for syntax highlighting in the source code is related to the lack of measures taken to protect the structure of web pages. Exploiting this vulnerability could allow a malicious actor to perform cross-site scripting attacks XSS remotely...