CtrlK
BlogDocsLog inGet started
Tessl Logo

path-traversal

Hunt directory traversal and archive traversal (ZipSlip/TarSlip) from user input to filesystem operations.

63

Quality

75%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Critical

Do not install without reviewing

Fix and improve this skill with Tessl

tessl review fix ./packages/decepticon/decepticon/skills/standard/analyst/path-traversal/SKILL.md
SKILL.md
Quality
Evals
Security

Path Traversal Playbook

Find sinks

  • open(user_path), send_file(user_path), file download endpoints, archive extraction APIs.

Probe payload classes

  • Relative traversal: ../../../../etc/passwd
  • Encoded traversal: %2e%2e%2f
  • Mixed separators: ..\\..\\windows\\win.ini
  • Archive traversal: entries like ../../app/config.py

Verify controls

  • Canonicalization done before allowlist check.
  • Path confinement to intended root.

Validation

Confirm unauthorized file read/write outside allowed directory with positive and negative controls.

Repository
PurpleAILAB/Decepticon
Last updated
First committed

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.