Back to skill

Security audit

TabAPI

Security checks for vulnerabilities and agentic risk

Overview

The TabAPI functions fit the stated purpose, but automatic setup executes remote installers without clearly limiting their effects or requiring your approval.

Review and approve CLI installation separately before allowing this skill to run its setup fallback, including any changes to other agents' skills. OOMOL mediates account access and requests; consider what you submit and applicable usage charges. The sole bundled artifact was fully inspected, but external installer behavior remains unverified. No malicious intent or credential theft was established.

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 (5)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
99% confidence
Finding

The supplied command performs remote script execution, not TabAPI searching or reading. Nothing in the supplied content establishes the Oomol installer as a supporting dependency for TabAPI. The downloaded script is not provided, so its additional behavior cannot be determined.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
83% confidence
Finding

The supplied chunk performs only a CLI login, with no demonstrated connection to TabAPI. Authentication could be a supporting implementation detail if that connection were established, but the provided content does not establish it or implement the declared functionality. No credential theft or other malicious behavior can be inferred from this command alone.

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 code without version pinning, independent integrity verification, or prior review. HTTPS protects transport but not against a compromised publishing endpoint; successful exploitation could compromise files, credentials, and other resources accessible to the agent's execution account.

Content

Scanner excerpt · SKILL.md (reported line 63)May include surrounding context.

The fallback setup executes remote installation scripts without warning about their system-level effects.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs the agent to execute remotely supplied shell or PowerShell code without explaining its permissions or obtaining approval for local system changes. Although limited to missing-CLI errors, this can turn a data-reading request into arbitrary code execution with the agent process's privileges if the installer source is compromised.

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 84)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