◉ Official answer
🎯 Template on Fire (General · Level 1 · +50 XP)
A custom email template builder evaluates user-provided template strings directly in the server template engine, leading to Server-Side Template Injection (SSTI).
Learning & Defense Goals:
🎯 Launch Isolated Sandbox on Cyber Lab →
Community Discussion Rules: Discuss methodologies, discovery tactics, and architectural hardening. Please do not post raw flags directly. Share your production remediation code!