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Security audit

Alt Text Generator AI

Security checks for vulnerabilities and agentic risk

Overview

The image-generation workflow fits its purpose, but the required CLI can silently install or refresh other agent skills without this skill explaining those changes.

Review the CLI installation separately and decide whether it may manage skills across your agents. Its documentation provides OO_SKILLS_SYNC_DISABLED=1 to disable startup synchronization. Use public image URLs you intend to share and account for usage credits. The exact remote installer and hosted connector implementation were not verified.

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 (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command executes an external installation script, with no demonstrated connection to Alt Text Generator AI or its declared search/read functionality. This introduces undeclared remote-code execution and installation behavior. The downloaded script's exact effects cannot be determined from the supplied chunk.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
93% confidence
Finding

The supplied code contains only a login command, with no Alt Text Generator AI resource reference or search/read behavior. Authentication could support the declared functionality, but the chunk provides no evidence of that connection; its sole demonstrated purpose is initiating login.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a mutable HTTPS download directly into Bash executes the returned content without a review or integrity-check step. The OOMOL domain is relevant to the documented integration, but that does not prevent installer or distribution compromise from becoming arbitrary code execution in the agent's environment.

Content

Scanner excerpt · SKILL.md (reported line 55)May include surrounding context.

The fallback setup executes downloaded installation scripts without warning about remote-code execution or system changes.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The fallback directs the agent to execute downloaded shell or PowerShell code without explicit approval for the resulting system changes or any integrity verification. Although conditional setup makes this less suspicious, a compromised installer endpoint or distribution pipeline could execute arbitrary code with the invoking user's privileges.

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 76)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