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Security audit

Weaviate

Security checks for vulnerabilities and agentic risk

Overview

The Weaviate reads fit the stated purpose, but setup executes unverified remote installers and the required CLI has broader effects on installed agent skills.

Review and install a specific CLI release yourself before enabling this skill, and connect only the Weaviate account you intend to expose through OOMOL. Consider disabling automatic skill synchronization with OO_SKILLS_SYNC_DISABLED=1, as documented in the CLI reference. The remote installer and binary remain unverified; the artifacts do not establish 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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command executes an installer from a non-Weaviate resource, with no visible connection to searching or reading Weaviate data. This is a materially different operation, not an established supporting implementation detail. The downloaded script's contents and any further effects are not shown.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
88% confidence
Finding

The supplied chunk performs only a login operation and contains no Weaviate search or read behavior. Authentication could be a supporting implementation detail if tied to Weaviate, but the supplied content establishes no such connection. As provided, its sole behavior is materially different from the declared purpose.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The setup command downloads a mutable remote script and immediately executes it without version pinning, independent integrity verification, or an explicit approval step; the PowerShell alternative has the same weakness. Compromise of the installation endpoint or its release infrastructure could execute arbitrary code with the agent process's permissions, potentially exposing local credentials or modifying files. The missing-CLI prerequisite reduces how often this path is reached but does not make it safe.

Content

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

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