Description
A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- GetSimple CMS 3.3.16 - Persistent Cross-Site Scripting EDB-49726 · webapps · Mar 30, 2021
GitHub 1 repository
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boku7/CVE-2020-23839 ★ 12 · Mar 30, 2021
Public PoC Disclosure for CVE-2020-23839 - GetSimple CMS v3.3.16 suffers from a Reflected XSS on the Admin Login Portal
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.