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Security audit

Doubao Seedream

Security checks for vulnerabilities and agentic risk

Overview

The image workflow fits its purpose, but setup directs execution of unverified remote code without clearly controlling broader changes to your agent environment.

Review and install a fixed CLI release yourself before using this skill, and require approval for setup changes. Check the CLI's automatic skill synchronization settings because it can affect other installed agents. Image requests pass through OOMOL to the connected provider and may consume credits. The remote installers could not be inspected, so their exact changes remain uncertain; no malicious behavior was established.

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
92% confidence
Finding

The only demonstrated behavior is remote installer execution, not interaction with Doubao Seedream. Dependency installation could be a supporting implementation detail, but the supplied content does not establish that this installer supports the declared purpose. The downloaded script is not provided, so its additional effects cannot be determined.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an HTTPS response directly into bash executes mutable remote content without independent integrity verification or review. The domain is consistent with the documented CLI provider, so there is no evidence of malicious intent, but a compromised hosting or release pipeline could run arbitrary commands and access local files or credentials; the PowerShell example has the same risk.

Content

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

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

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The missing-CLI fallback directs the agent to execute downloaded shell or PowerShell code without first explaining the system changes or obtaining installation-specific approval. The fallback-only condition limits exposure, but the write-action confirmation requirement does not explicitly cover this local installation, which 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