Summary
Member-only story Hacker Holidays 2026: Day 7 Walkthrough (Do Not Disturb) NoSQL injection bypassed the login. Server-Side Template Injection gave us code execution. A forgotten Node.js debugger running as a disk-group user gave us root. This is part of my Hacker Holidays 2026 walkthrough series. Read all walkthroughs here: This is Day 7 of my Hacker Holidays 2026 walkthrough series. If Day 5 was a solid Boot2Root warmup, Day 7 is the real deal. This challenge chains four distinct vulnerabilities to go from an anonymous attacker to full root access:
- NoSQL injection to bypass authentication
- EJS Server-Side Template Injection (SSTI) for Remote Code Execution
- Reverse shell to gain interactive access
- Node.js Inspector exploitation and disk-group privilege escalation to read the root flag Let us break down every step.