ChatPDF

• Outcome: Review
• Latest audit: Nov 3, 2026 · 11:19 AM UTC
• Version: 1.0.5

Overview

The ChatPDF workflow includes approval safeguards, but setup can automatically execute an unverified remote installer.

Review and install a verified CLI release yourself before allowing this skill to run, including checking any bundled agent-skill changes. The remote installers were unavailable for inspection. OOMOL brokers access to your connected ChatPDF account; confirm intended imports and deletion targets. No artifact-backed malicious behavior was found.

A.I.G

Vulnerability Patterns

• Skill Instruction Hijacking: Alters the agent's session goals or safety constraints when the skill loads
• Agent Memory Poisoning: Writes attacker-controlled rules into memory that affect later sessions
• Remote Payload Retrieval and Execution: Fetches external code whose behavior can change after review
• Embedded Malicious Code: Ships malicious scripts inside the skill and executes them locally
• Unauthorized Access and Privilege Escalation: Obtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns

• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code
• Excessive Agency: Unrestricted Tool Access, Autonomous Decision Making, Scope Creep
• MCP Tool Poisoning: Hidden Instructions, Unicode Deception, Parameter Description Injection
• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration

Findings (3)

Description-Behavior Mismatch

High

• Category: MCP Tool Poisoning
• Confidence: 97% confidence

Finding

The supplied code performs remote installer execution, not the declared ChatPDF data operations. Installation could be a supporting implementation detail if its relationship to ChatPDF were established, but the supplied content establishes no such relationship. The downloaded script's contents and downstream behavior are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High

• Category: Supply Chain
• Confidence: 98% confidence

Finding

The fallback setup instructions pipe a remotely fetched, unpinned script directly into Bash; the PowerShell alternative likewise downloads and immediately executes remote code. Compromise of the distribution endpoint or installer could execute attacker-controlled code with the invoking user's privileges, exposing local files and credentials. The documented CLI dependency and missing-command prerequisite narrow when this occurs but do not provide integrity verification or explicit installation approval.

Content

Scanner excerpt · SKILL.md (reported line 57)May include surrounding context.

• oo: command not found — install the oo CLI (other platforms: https://cli.oomol.com/install-guide.md):

  bash

  curl -fsSL https://cli.oomol.com/install.sh | bash    # macOS / Linux
  

  powershell

Autonomous Decision Making

Medium

• Category: Excessive Agency
• Confidence: 80% confidence

Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 78)May include surrounding context.

md

- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources