Incomplete blacklist in sanitize_string in Zenphoto before 1.4.9 allows remote attackers to conduct cross-site scripting (XSS) attacks.
https://www.openwall.com/lists/oss-security/2015/07/18/3
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-5546
http://www.zenphoto.org/news/zenphoto-1.4.9
http://packetstormsecurity.com/files/132667/ZenPhoto-1.4.8-XSS-SQL-Injection-Traversal.html