[+] Exploit Title ; Gap Messenger Web Version Multiple Vulnerability [+] Date : 2018-04-12 [+] Author : 0P3N3R From IRANIAN ETHICAL HACKERS [+] Vendor Homepage : https://gap.im/ [+] Dork : N/A [+] Forum : --- [+] Tested On : windows 10 - kali linux 2.0 [+] Contact : https://telegram.me/WebServer [+] Description : [!] Gap is An extremely powerful and popular instant messenger [!] Gap Has three versions of the desktop - Web and mobile. [!] More than 100,000 users use it in Iran You can Download it from App Store And bazar [+] Poc : [+] Open Redirect : [!] https://web.gap.im/#/redirect?url=your link here [!] For Ex : [!] https://web.gap.im/#/redirect?url=https://google.com [+] Unvalidated File Upload Vulnerability : [!] You can upload any files and run on server [+] Security Level : [!] Medium [+] Exploitation Technique: [!] Remote [+] Request Method : [!] GET [+] Vulnerability Files : [!] Index [+] Fix : [!] Restrict user input or replace bad characters [+] We Are : [+] 0P3N3R [+] S0!hp