CVE-2017-9425
The Facetag extension 0.0.3 for Piwigo allows XSS via the name parameter to ws.php in a facetag.changeTag action.
Date published : 2018-02-25
https://www.exploit-db.com/exploits/42098/
http://touhidshaikh.com/blog/poc/facetag-ext-piwigo-stored-xss/