This Metasploit module exploits a preauth Server-Side Template Injection vulnerability that leads to remote code execution in PlaySMS before version 1.4.3. This issue is caused by double processing a server-side template with a custom PHP template system called TPL which is used in the PlaySMS template engine at src/Playsms/Tpl.php:_compile(). The vulnerability is triggered when an attacker supplied username with a malicious payload is submitted. This malicious payload is then stored in a TPL template which when rendered a second time, results in code execution.
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