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Security audit

Forem

Security checks for vulnerabilities and agentic risk

Overview

The Forem integration is coherent, but its setup fallback directs the agent to execute downloaded installation code without verification or explicit user approval.

Review and approve CLI setup separately before allowing the fallback installer to run. Verify the downloaded code and check its bundled-skill installation behavior. Connecting Forem gives OOMOL access to the account; retain the skill's explicit approval requirement for article creation and updates. External executable contents were not verified in this review.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied code executes an installer from an unrelated domain without any visible connection to Forem. Nothing in the chunk establishes this as a supporting implementation detail for Forem access. The downloaded script's contents and further effects cannot be determined from the supplied code.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a mutable remote script directly into bash executes its contents with the invoking user's privileges without inspecting or independently verifying them; the PowerShell example has the same underlying risk. HTTPS protects transport but not against a compromised distribution server or publisher, which could turn this legitimate dependency setup into arbitrary code execution.

Content

Scanner excerpt · SKILL.md (reported line 64)May include surrounding context.

Fallback installation executes downloaded scripts without warning about system changes or remote-code execution.

Medium
Category
Output Handling
Confidence
91% confidence
Finding

The fallback directs installation through downloaded shell or PowerShell code without requiring approval for local software installation or explaining its system effects. Restricting this to a missing-CLI error reduces exposure, but a Forem data request does not inherently authorize executing an installer on the user's machine.

Content

No source excerpt is available for this finding.

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 85)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