Trust Assessment
cwicr-material-substitution received a trust score of 79/100, placing it in the Mostly Trusted category. This skill has passed most security checks with only minor considerations noted.
SkillShield's automated analysis identified 2 findings: 0 critical, 1 high, 1 medium, and 0 low severity. Key findings include Missing required field: name, Arbitrary File Write via export_substitution_report.
The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. All layers scored 70 or above, reflecting consistent security practices.
Last analyzed on February 14, 2026 (commit 13146e6a). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.
Layer Breakdown
Behavioral Risk Signals
Security Findings2
| Severity | Finding | Layer | Location | |
|---|---|---|---|---|
| HIGH | Arbitrary File Write via export_substitution_report The `export_substitution_report` function directly uses the `output_path` parameter to write an Excel file. If the `output_path` can be controlled by untrusted input, an attacker could specify an arbitrary file path, leading to overwriting sensitive system files, writing to unauthorized locations, or potentially exfiltrating data by writing it to a publicly accessible directory. This constitutes an arbitrary file write vulnerability. Implement strict validation and sanitization of the `output_path` parameter. Restrict file writes to a designated, sandboxed directory. Consider generating a unique filename (e.g., using a UUID) and only allowing the user to specify a base filename, not the full path. Ensure the calling agent enforces these restrictions and limits the skill's filesystem access. | LLM | SKILL.md:300 | |
| MEDIUM | Missing required field: name The 'name' field is required for claude_code skills but is missing from frontmatter. Add a 'name' field to the SKILL.md frontmatter. | Static | skills/datadrivenconstruction/cwicr-material-substitution/SKILL.md:1 |
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