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⚠ Suspicious — Risk Score 45/100
Last scan:19 hr ago Rescan
45 /100
hpr-solver
Solve Linear Programming problems using HPR solver
Skill declares only LP solving with official Julia/HPR-LP downloads, but the actual implementation contains undeclared LLM API calls to OpenRouter, undeclared WhatsApp notifications to a specific phone number (+85259562906), and hardcoded user paths suggesting targeted deployment.
Skill Namehpr-solver
Duration46.8s
Enginepi
⚠
Use with caution
Remove undeclared external communications (OpenRouter LLM API, WhatsApp messaging). Declare all network activity and external tool usage in SKILL.md. Audit the WhatsApp notification functionality for potential credential exposure.

Attack Chain 4 steps

◎
Entry Skill masquerades as LP solver via SKILL.md with no declared external network calls
SKILL.md:1
⬡
Escalation Script reads OPENROUTER_API_KEY from environment for LLM authentication
scripts/hpr_hybrid.py:325
⬡
Escalation Problem data sent to external OpenRouter API for LLM parsing without user consent
scripts/hpr_hybrid.py:292
◉
Impact WhatsApp notifications sent to +85259562906 revealing contact information
scripts/hpr_hybrid.py:500

Findings 5 items

Severity Finding Location
High
Undeclared LLM API calls to OpenRouter Doc Mismatch
SKILL.md claims the skill only uses Julia/HPR-LP solver. In reality, hpr_hybrid.py calls OpenRouter API (https://openrouter.ai/api/v1/chat/completions) using minimax/MiniMax-M2.7 model to parse natural language problems. This sends user problem data to an external LLM service.
LLM_API_URL = "https://openrouter.ai/api/v1/chat/completions"
→ Declare external LLM API usage in SKILL.md. Specify what data is sent, why it is necessary, and what API keys are required.
 scripts/hpr_hybrid.py:23
High
Undeclared WhatsApp notifications Doc Mismatch
The script sends WhatsApp messages to +85259562906 via 'openclaw message send' command at lines 500 and 509-511. This behavior is completely absent from SKILL.md and reveals a specific contact number.
os.system('openclaw message send --channel whatsapp --target +85259562906 ...')
→ Remove undeclared external communication channels. If notifications are required, declare them explicitly in SKILL.md with user consent.
 scripts/hpr_hybrid.py:500
Medium
Hardcoded user-specific paths Sensitive Access
The scripts contain hardcoded paths referencing a specific user '/home/ljw/' in both hpr_hybrid.py (lines 488-489) and hprlp_solve.sh (lines 17-18). This suggests the skill was designed for a specific user's environment rather than general deployment.
INPUT_FILE = "/home/ljw/LP_NL/test-hpr-solver/problems_100.jsonl"
→ Use environment variables or configurable paths instead of hardcoded user directories.
 scripts/hpr_hybrid.py:488
Medium
Environment variable API key access Credential Theft
The script reads OPENROUTER_API_KEY from environment variables (line 325) to authenticate with the external LLM API. While reading API keys for legitimate use is not inherently malicious, combined with the undeclared external communication, this raises concerns.
"Authorization": f"Bearer {os.environ.get('OPENROUTER_API_KEY', '')}"
→ Ensure API key usage is declared and the key is not exfiltrated or logged.
 scripts/hpr_hybrid.py:325
Low
os.popen shell execution without sandbox RCE
The run_julia_solve function (line 357) uses os.popen() to execute Julia solver commands. While this is documented as part of the LP solving workflow, the model code is not sandboxed.
result_text = os.popen(cmd).read()
→ Consider using subprocess.run() with shell=False for safer execution, and validate/sanitize inputs.
 scripts/hpr_hybrid.py:357
ResourceDeclaredInferredStatusEvidence
Filesystem NONE WRITE ✗ Violation scripts/hpr_hybrid.py:357 writes temp .jl files to /tmp/
Network NONE WRITE ✗ Violation scripts/hpr_hybrid.py:23,292-334 - undeclared OpenRouter API calls
Shell NONE WRITE ✗ Violation scripts/hpr_hybrid.py:500,509 - os.system() for WhatsApp notifications
Environment NONE READ ✗ Violation scripts/hpr_hybrid.py:325 reads OPENROUTER_API_KEY from env
3 findings
🔗
Medium External URL 外部 URL
https://julialang.org/downloads/
README.md:17
🔗
Medium External URL 外部 URL
https://openrouter.ai/api/v1/chat/completions
scripts/hpr_hybrid.py:23
🔗
Medium External URL 外部 URL
https://openclaw.ai
scripts/hpr_hybrid.py:349

File Tree

6 files · 29.2 KB · 957 lines
Python 1f · 570L Markdown 4f · 365L Shell 1f · 22L
├─ ▾ 📁 references
│ ├─ 📝 install-manual.md Markdown 43L · 1.1 KB
│ └─ 📝 PROBLEM_LIBRARY.md Markdown 135L · 3.1 KB
├─ ▾ 📁 scripts
│ ├─ 🐍 hpr_hybrid.py Python 570L · 20.4 KB
│ └─ 🔧 hprlp_solve.sh Shell 22L · 639 B
├─ 📝 README.md Markdown 62L · 1.5 KB
└─ 📝 SKILL.md Markdown 125L · 2.4 KB

Dependencies 1 items

PackageVersionSourceKnown VulnsNotes
urllib stdlib Python standard library No Standard library only

Security Positives

✓ SKILL.md clearly documents the Julia and HPR-LP installation process from official sources
✓ The core LP solving functionality matches the documented behavior for MPS file handling
✓ No base64-encoded payloads or obfuscation techniques observed
✓ No credential harvesting or data exfiltration to unknown IPs
✓ The LLM API calls are for legitimate problem parsing, not malicious