Open Source Social Network (OSSN) through 10.1 contains a missing authorization vulnerability in ossnalbumpagehandler that allows unauthenticated attackers to download files via album/getphoto and album/getcover. Attackers can enumerate sequential file GUIDs to retrieve friends-only album photos and other stored files without any access check.
Open Source Social Network (OSSN) 8.6 is vulnerable to Cross Site Scripting (XSS) via the parameter param at endpoint u/administrator/friends.