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Security audit

Gotify

Security checks for vulnerabilities and agentic risk

Overview

Gotify operations are appropriately controlled, but setup permits remote code execution and leaves broader agent changes undisclosed.

Review setup before enabling this skill. Prefer a reviewed, pinned CLI installation and confirm which agent skills it will install or update. Upstream documents OO_SKILLS_SYNC_DISABLED for disabling startup skill synchronization in its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md). Understand that OOMOL mediates Gotify access. The remote installers remain unverified; no malicious behavior was established in the bundled artifact.

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 installs software from an Oomol endpoint rather than performing Gotify operations. No visible code establishes that this installation supports the declared Gotify functionality. The remote installer's contents are not supplied, so its further behavior cannot be assessed.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an unpinned HTTPS response directly into bash executes the remote endpoint's current contents without prior inspection or integrity verification. Compromise of the installer hosting or release pipeline could therefore lead to arbitrary code execution with the agent's local permissions; the PowerShell alternative has the same trust weakness.

Content

Scanner excerpt · SKILL.md (reported line 57)May include surrounding context.

The setup workflow executes remote installation scripts without warning about local system changes.

Medium
Category
Output Handling
Confidence
92% confidence
Finding

The fallback directs the agent to execute remote installation scripts without first explaining local changes or requiring explicit installation approval. Although dependency installation is relevant to the skill, it can modify the user's environment and execute code with the agent's local permissions; the Gotify write-confirmation rules do not explicitly cover this setup 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 78)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