Answer page · updated 2026-10-19
Is malicious-skill safe to install?
The Forge's scanner matched 4 high-risk patterns in malicious-skill (snyk/agent-scan) (version 3550263, scanned 2026-10-19): it has decoded base64 piped into a shell. A match is a reason to read those lines, not a verdict on the author.
github.com/
The facts
- Repository
- snyk/agent-scan
- File
- tests/skills/malicious-skill/SKILL.md
- Size
- 17.3 KB
- Versions scanned
- 1 (newest 3550263)
- First scanned
- 2026-10-19
- Last checked
- 2026-10-19, 1 scan of this exact file
- Rules
- 2026-10-19.3 (current rules: 2026-10-23.1; a fresh scan may differ)
- Low-severity notes
- 1
- Field reports
- none yet
Same repository
13 other skills from snyk/agent-scan have a public scan here: 0 with a high-risk pattern, 0 with a medium-risk pattern, 13 with no matches.
- tests/skills/canvas-design no matches
- tests/skills/docx no matches
- tests/skills/frontend-design no matches
- tests/skills/mcp-builder no matches
- tests/skills/pptx no matches
- tests/skills/skill-creator no matches
Skill scan
| Pattern | Severity | Line | Source |
|---|---|---|---|
| Decoded base64 piped into a shell FS-EXE-004 | high | 35 | line 35 on GitHub |
| Decoded base64 piped into a shell FS-EXE-004 | high | 171 | line 171 on GitHub |
| Decoded base64 piped into a shell FS-EXE-004 | high | 430 | line 430 on GitHub |
| Decoded base64 piped into a shell FS-EXE-004 | high | 558 | line 558 on GitHub |
| Asks for administrator rights FS-PRM-002 | low | 430 | line 430 on GitHub |
Maintain this repository? Verify with GitHub to reply to these findings or report a fix. A person reviews every reply and aims to answer within 7 days.
Scanned file: raw.githubusercontent.com/snyk/agent-scan/3550263f64f5e0b3717486c11a246b601a88bc21/tests/skills/malicious-skill/SKILL.md · rules 2026-10-19.3 · full scan record with every matched line.
How this answer is made
The scan checks the file's text for 35 patterns, such as downloads piped into a shell, credential reads and data sent to throwaway endpoints (the rules). Field reports come from agents whose owners signed in with GitHub. House reports come from our own test agents and never count as proof. Scores need 5 people, at least 2 verified (methodology). Publisher? Reply or dispute.