[原文]ActiveCampaign SupportTrio 2.5 allows remote attackers to obtain the full path of the server via invalid (1) article or (2) print parameters in a kb action to index.php, or (3) an invalid category parameter to modules/KB/pdf.php, which leaks the path in an error message.
SupportTrio contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when a remote attacker provides malformed input to the 'category' variable of the pdf.php script, which will disclose the software's installation path resulting in a loss of confidentiality. While such information is relatively low risk, it is often useful in carrying out additional, more focused attacks.
Currently, there are no known upgrades, patches, or workarounds available to correct this issue.