Server-Side Template Injection: Transforming Web Applications from Assets to Liabilities

This report analyzes Server-Side Template Injection (SSTI) vulnerabilities and real-world exploitation, covering discovery methods (fuzzing, blind SSTI), out-of-band verification (nslookup/Interactsh, RMI), payload obfuscation (base64, character concatenation), and demonstrated attacks including CVE-based exploits and a cryptojacking campaign that delivered miner droppers; it highlights sectoral impact (retail, finance), higher cloud risk, and mitigation via IPS protections.