The phpMyFAQ Team has learned of multiple security issues that'd been discovered in phpMyFAQ 3.1.16 and earlier. phpMyFAQ contains cross-site scripting (XSS) vulnerabilities.
phpMyFAQ doesn't implement sufficient checks to avoid XSS when adding malicious content into tags and FAQs.
The phpMyFAQ Team has released the new phpMyFAQ version 3.1.17, which fixes these vulnerabilities. All users of affected phpMyFAQ versions are encouraged to upgrade as soon as possible to this latest version.
There's no workaround except installing phpMyFAQ 3.1.17.
The phpMyFAQ team would like to thank @ahmedvienna for the responsible disclosures of these vulnerabilities.