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Security audit

Buildium

Security checks for vulnerabilities and agentic risk

Overview

The Buildium reading workflow fits its purpose, but setup can execute a downloaded installer without verification or a clear approval step.

Review the setup before enabling this skill. Install and verify the CLI separately, check whether it adds skills to other agents, and connect only the Buildium account and permissions you intend OOMOL to access. The remote installer and hosted connector implementation were not verified; 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
99% confidence
Finding

The supplied code performs remote script execution and contains no visible Buildium integration or data-reading functionality. Nothing supplied establishes this installer as a supporting dependency for the declared purpose. The downloaded script's contents and downstream effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping a remotely fetched installer directly into Bash executes mutable network-delivered code without independent integrity verification; the PowerShell example uses the same pattern. A compromised distribution endpoint could execute arbitrary commands with the agent's local privileges, potentially exposing files or credentials, although the supplied content provides no evidence that the endpoint is currently malicious.

Content

Scanner excerpt · SKILL.md (reported line 61)May include surrounding context.

The setup workflow executes remote installation scripts without warning about the system-integrity risk.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The missing-CLI fallback instructs the agent to execute an installer without requiring explicit approval for local system changes or explaining that downloaded code will run with the invoking user's privileges. Conditional execution limits exposure, but a read-oriented Buildium request does not itself authorize installing software; this finding overlaps with SC2.

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 82)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