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letsfg

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Summary

letsfg v1.1.0 was classified as CRITICAL RISK with a risk score of 1101. Sigil detected 104 findings across 171 files, covering phases including provenance, code patterns, network exfiltration, credential access, install hooks, obfuscation. Review the findings below before installing this package.

Package description: Agent-native flight search & booking. 400+ airlines, 102 direct airline connectors run locally. Built for autonomous AI agents.

CRITICAL RISK(1101)

v1.1.0

21 March 2026, 23:29 UTC

by Sigil Bot

Risk Score

1101

Findings

104

Files Scanned

171

Provenance

Registry

https://pypi.org/project/letsfg/1.1.0/

Findings by Phase

•

Phase Ordering

Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.

install-pip-setup-exec

CRITICAL

setup.py executes code at install time

letsfg-1.1.0/letsfg/connectors/checkout_engine.py:20

  - CSS selectors for each element
  - Anti-bot setup (Kasada, Akamai, Cloudflare, PerimeterX)
  - Pre-navigation requirements (homepage pre-load for Kasada, etc.)
Why was this flagged?

This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.

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