luny has reported two vulnerabilities in GANTTy, which can be exploited by malicious people to disclose system information and conduct cross-site scripting attacks.
1) Input passed to the "message" parameter in index.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
2) It is possible to disclose the installation path via the error message that is displayed by index.php when an invalid parameter value is passed to the script.
Solution: Edit the source code to ensure that input is properly verified.
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Subject: GANTTy Cross-Site Scripting and Information Disclosure
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