Multiple SQL injection vulnerabilities in Gespage before 7.4.9 allow remote attackers to execute arbitrary SQL commands via the (1) show_prn parameter to webapp/users/prnow.jsp or show_month parameter to (2) webapp/users/blhistory.jsp or (3) webapp/users/prhistory.jsp.
https://www.exploit-db.com/exploits/43447/
https://sysdream.com/news/lab/2018-01-02-cve-2017-7997-gespage-sql-injection-vulnerability/