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Security audit

DynaPictures

Security checks for vulnerabilities and agentic risk

Overview

The DynaPictures workflow is coherent, but its automatic setup can execute changing remote code and introduce broader agent changes without clear approval.

Review and approve CLI installation separately, including any bundled skills it adds or synchronizes. Prefer a verified, version-pinned installation and prevent automatic setup until reviewed. Confirm that OOMOL's account access and handling of template/image data suit your needs. The artifact requires approval before image generation, but the external installer and 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
98% confidence
Finding

The supplied command executes an installer from Oomol, not a DynaPictures endpoint. No DynaPictures integration or dependency relationship is shown, so this is an undeclared installation capability rather than an established supporting implementation detail. The remote script's further 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
83% confidence
Finding

The supplied chunk only performs CLI login and shows no DynaPictures interaction or connection between oo and DynaPictures. Authentication could be a supporting implementation detail if that connection were established, but the provided content does not establish it.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a remotely fetched script directly into Bash executes its current contents with the invoking user's permissions, without a pinned version or independent integrity verification; the PowerShell alternative has the same issue. Compromise of the installer distribution path could therefore lead to arbitrary code execution and access to local secrets, although setup is conditional and there is no evidence that the current endpoint is malicious.

Content

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

First-time setup instructs the agent to execute remote installers without warning the user about local system changes.

Medium
Category
Output Handling
Confidence
92% confidence
Finding

On a missing-CLI error, the skill instructs installation without first disclosing local changes or obtaining approval; its confirmation rules cover DynaPictures actions, not software installation. If followed in an execution environment that permits these commands, this can modify the user's system beyond the requested DynaPictures operation, although the declared oo-only tool restriction may prevent execution in strictly enforced environments.

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 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