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Security audit

Discord

Security checks for vulnerabilities and agentic risk

Overview

The Discord actions have clear approval safeguards, but setup can execute an unverified remote installer without separate user approval.

Review the CLI installation separately before allowing setup, and use a version whose source and integrity you can verify. OOMOL mediates your Discord account access. Also review its documented automatic skill installation and synchronization; the current [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md) documents OO_SKILLS_SYNC_DISABLED to disable startup synchronization. The remote installer and hosted connector implementation were not verified, so their exact runtime effects remain uncertain.

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
98% confidence
Finding

The supplied command executes a remote installer rather than performing Discord operations. Dependency installation can be a supporting implementation detail, but the supplied chunk provides no evidence that this installer supports Discord functionality. The remote script's contents and any additional effects cannot be determined from this snippet.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping the HTTPS response directly into bash executes mutable remote content without a pinned version or independently verified integrity; the PowerShell alternative has the same underlying risk. Compromise of the distribution endpoint could result in arbitrary code execution, including theft of accessible credentials or modification of local files, although the supplied skill provides no evidence that the endpoint is malicious.

Content

Scanner excerpt · SKILL.md (reported line 73)May include surrounding context.

The setup workflow executes downloaded installation scripts without warning about running remote code.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The setup fallback directs installation through downloaded scripts without explaining that this executes remote code with the local user's privileges or requiring explicit installation approval. Restricting setup to a missing-CLI error reduces exposure, but a routine Discord request can still lead to consequential local execution beyond the requested service operation.

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 94)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