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Security audit

ONLYOFFICE DocSpace

Security checks for vulnerabilities and agentic risk

Overview

The DocSpace read operations fit the stated purpose, but missing software triggers immediate execution of an unverified remote installer.

Review the CLI setup before enabling this skill. Prefer a separately reviewed, version-pinned installation and require approval before any fallback installer runs. Consider OOMOL's access to your connected DocSpace account and use read-only credentials where available. Installer contents and exact system changes remain unverified; the artifacts do not establish data theft or malicious intent.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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
Findings (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied code performs no visible ONLYOFFICE DocSpace search or read operation. Instead, it executes an installer from an unrelated domain, with no demonstrated connection to the declared functionality. The downloaded script's contents and further effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

The command pipes a mutable remote script directly into Bash without version pinning or independent integrity verification; the Windows alternative uses the same fetch-and-execute pattern. A compromised distribution endpoint or altered installer could execute arbitrary code with the agent's account permissions, potentially exposing local files and credentials; HTTPS and the missing-CLI condition do not eliminate this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 60)May include surrounding context.

Fallback setup instructs immediate execution of remote installation scripts without a system-impact warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The fallback directs an agent to install software after a command-not-found error without first obtaining approval for local system changes. Although conditional and plausibly legitimate, installation goes beyond the user's DocSpace read request and executes code with the invoking account's permissions.

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 81)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

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 86)May include surrounding context.

md
## Resources

- ONLYOFFICE DocSpace homepage: https://www.onlyoffice.com/docspace.aspx
- API documentation: https://api.onlyoffice.com/docspace/