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Security audit

Workiz

Security checks for vulnerabilities and agentic risk

Overview

The Workiz features fit the stated purpose, but setup directs the agent to execute downloaded software without a separate review or approval step.

Review before installing. Approve CLI installation separately, use a reviewed release with verified integrity, and check its automatic skill synchronization settings. Connecting Workiz also entrusts OOMOL with access to business records and account credentials. The concern is insufficient control over setup effects; the inspected artifact does not establish malicious behavior.

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 code executes an Oomol-hosted installer, with no demonstrated connection to Workiz. Although dependency installation can be a supporting implementation detail, this chunk provides no evidence that the installer supports the declared functionality. The downloaded script's further behavior cannot be determined from the supplied code.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

Piping an HTTPS response directly into Bash executes mutable remote content without a pinned version or independent integrity verification. A compromised distribution endpoint or altered installer could execute arbitrary commands with the user's privileges, potentially exposing local secrets or modifying files; the conditional setup context reduces exposure but does not remove this supply-chain risk.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

The setup fallback instructs the agent to execute a downloaded installer without warning about local system changes or remote-code execution.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs an agent performing a read-oriented Workiz task to install software locally without first explaining the system changes or obtaining approval. Although triggered only when the CLI is missing, both installation examples execute downloaded code with the invoking user's privileges, extending the task beyond remote data access.

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 80)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