spikekill.php in Cacti before 1.1.16 might allow remote attackers to execute arbitrary code via the avgnan, outlier-start, or outlier-end parameter.

Cross-site scripting (XSS) vulnerability in aggregate_graphs.php in Cacti before 1.1.16 allows remote authenticated users to inject arbitrary web script or HTML via specially crafted HTTP Referer headers, related to the $cancel_url variable. NOTE: this vulnerability exists because of an incomplete fix (lack of the htmlspecialchars ENT_QUOTES flag) for CVE-2017-11163.

lib/html.php in Cacti before 1.1.18 has XSS via the title field of an external link added by an authenticated user.

Cacti before 1.1.37 has XSS because the get_current_page function in lib/functions.php relies on $_SERVER['PHP_SELF'] instead of $_SERVER['SCRIPT_NAME'] to determine a page name.

Cacti before 1.1.37 has XSS because it does not properly reject unintended characters, related to use of the sanitize_uri function in lib/functions.php.

Cacti before 1.1.37 has XSS because it makes certain htmlspecialchars calls without the ENT_QUOTES flag (these calls occur when the html_escape function in lib/html.php is not used).

A cross-site scripting (XSS) vulnerability exists in color_templates.php in Cacti before 1.2.0 due to lack of escaping of unintended characters in the Name field for a Color.

A cross-site scripting (XSS) vulnerability exists in pollers.php in Cacti before 1.2.0 due to lack of escaping of unintended characters in the Website Hostname for Data Collectors.

A cross-site scripting (XSS) vulnerability exists in graph_templates.php in Cacti before 1.2.0 due to lack of escaping of unintended characters in the Graph Vertical Label.

A cross-site scripting (XSS) vulnerability exists in host.php (via tree.php) in Cacti before 1.2.0 due to lack of escaping of unintended characters in the Website Hostname field for Devices.