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Security audit

Vimeo

Security checks for vulnerabilities and agentic risk

Overview

This Vimeo helper needs review because setup immediately executes remote installers and video transfers bypass its confirmation safeguards.

Review and verify the CLI installer before allowing setup, including whether it installs other agent skills. Confirm OOMOL's access and video-storage retention terms, explicitly authorize video transfers, and retain the existing confirmations for Vimeo changes and deletions. The remote installer and hosted connector 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
96% confidence
Finding

The supplied code performs no visible Vimeo operation and instead executes an installer from a different service. Although installing a dependency can be a supporting implementation detail, the supplied chunk establishes no connection between this installer and the declared Vimeo functionality. The remote script's contents and subsequent effects 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

Piping the HTTPS installer directly into bash gives the remotely returned content immediate local code-execution privileges without prior inspection or integrity verification. The endpoint is plausibly legitimate and serves a relevant dependency, but HTTPS alone does not protect against a compromised publisher or distribution service; this is the same underlying issue as SQP-2.

Content

Scanner excerpt · SKILL.md (reported line 79)May include surrounding context.

The safety guidance classifies an action that stores video data as a read-only operation safe to run directly.

Medium
Category
Excessive Agency
Confidence
93% confidence
Finding

The untagged download_video_file action copies video content into connector transit storage, yet the safety guidance treats all untagged actions as reads safe to run directly. Reading metadata and transferring potentially private media have different confidentiality and retention implications, so this classification can bypass appropriate approval for creating an additional stored copy.

Content

No source excerpt is available for this finding.

Fallback setup executes remotely downloaded installation scripts without a security warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The fallback setup executes remotely supplied shell or PowerShell code without a pinned version or independent integrity verification. If the distribution infrastructure is compromised, the installer can execute arbitrary code with the invoking user's permissions; the missing-CLI condition limits exposure but does not remove this supply-chain risk.

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 100)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