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Security audit

Embase

Security checks for vulnerabilities and agentic risk

Overview

The Embase searches fit the stated purpose, but setup can execute unverified remote installers without a clear user approval step.

Review and install the CLI separately before using this skill. Require approval for installation, verify the release, and check its automatic agent-skill synchronization settings. Embase queries use your OOMOL-connected account; installer effects and the exact downloaded release remain unverified.

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
97% confidence
Finding

The supplied code performs remote script execution rather than Embase searching or reading. Although dependency installation can be a supporting implementation detail, this chunk provides no evidence that the external installer supports Embase functionality. The downloaded script's contents and further 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

The command pipes a mutable remote script directly into Bash without pinning or independently verifying its contents; the PowerShell alternative has the same weakness. If the script distribution infrastructure is compromised, attacker-controlled code could execute with the agent's privileges and access local files or credentials; HTTPS alone does not prevent this supply-chain scenario.

Content

Scanner excerpt · SKILL.md (reported line 56)May include surrounding context.

The fallback setup instructs the agent to execute downloaded installation scripts without warning the user about the system changes or remote-code execution.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The fallback directs the agent to install software by executing remote scripts without first explaining the system changes or obtaining explicit approval. Although the missing-command condition limits exposure, a request to search Embase does not itself authorize arbitrary installer execution with the agent's operating-system 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 77)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