Back to skill

Security audit

Document360

Security checks for vulnerabilities and agentic risk

Overview

The Document360 reading functions fit the stated purpose, but automatic setup can execute unverified remote code and introduce persistent agent changes without clear user approval.

Review before installing. Use a separately reviewed, version-controlled CLI installation and require approval for setup changes. Review or disable managed-skill synchronization using the documented OO_SKILLS_SYNC_DISABLED control. OOMOL will mediate access to your connected Document360 account. No malicious behavior was established, but the remote installer and exact installed CLI behavior 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 (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The supplied chunk performs remote code installation/execution rather than the declared Document360 data operations. Although installation can support a skill, the supplied content establishes no connection between this installer and Document360. The downloaded script's contents and additional 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

The command streams a mutable remote script directly into Bash without pinning or independently verifying the downloaded artifact; the PowerShell alternative has the same execution pattern. If the distribution endpoint or release infrastructure is compromised, attacker-controlled code could execute with the invoking user's privileges, exposing local files and credentials. HTTPS and the conditional setup trigger reduce some exposure but do not establish artifact integrity; this overlaps with SQP-2 rather than representing a separate exploit chain.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

Automatic CLI setup executes downloaded scripts without warning about local system changes.

Medium
Category
Output Handling
Confidence
91% confidence
Finding

A missing CLI triggers instructions to install software without requiring approval or explaining the resulting local changes, expanding a read-only data request into a host-modifying operation. The error-only trigger limits exposure, and a strictly enforced Bash(oo *) allowlist could block these commands, but neither makes the prescribed setup behavior safe when installation is permitted.

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 79)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