fanbox-agent
Fail
Audited by Snyk on Jul 30, 2026
Risk Level: CRITICAL
Full Analysis
CRITICAL E006: Malicious code pattern detected in skill scripts.
- Malicious code pattern detected (high risk: 0.90). This document exposes powerful remote-control capabilities (reading other terminals, sending arbitrary commands, creating autorun/scheduled tasks and programmatic bypass of confirmations) that can be readily abused for data exfiltration, credential theft, remote code execution/backdoors and persistent compromise.
MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).
- Third-party content exposure detected (medium risk: 0.30). 该 skill 的运行时会通过
curl "$FANBOX_CTL/read?id=t2&lines=100"读取 FanBox 终端窗口的最近输出并将其作为可用文本(output)返回给 LLM/流程,从而间接摄入可由外部用户在窗口中生成的自由文本(如 claude/TUI 交互或命令回显)。
MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).
- Potentially malicious external URL detected (high risk: 1.00). The skill issues runtime curl calls to the FanBox control endpoints (e.g. "$FANBOX_CTL/send" and "$FANBOX_CTL/create") which directly send prompts/commands to child agents or execute commands in remote terminals, so these external URLs control agent prompts and execution.
Issues (3)
E006
CRITICALMalicious code pattern detected in skill scripts.
W011
MEDIUMThird-party content exposure detected (indirect prompt injection risk).
W012
MEDIUMUnverifiable external dependency detected (runtime URL that controls agent).
Audit Metadata