Security audit

Twelve Data

Security checks for vulnerabilities and agentic risk

Overview

The skill is a coherent Twelve Data connector, but its setup instructions direct users to execute remote installer scripts directly in a shell.

Review the setup path before installing. Prefer an official, version-pinned, signed or checksum-verified oo CLI installer instead of running a downloaded script directly in Bash or PowerShell, and only connect the Twelve Data account you intend this skill to use.

A.I.G

Vulnerability Patterns

Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
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
Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

Findings (2)

T03 · Remote Payload Retrieval and Execution

Error

Location: SKILL.md:66
Finding: Unverified Remote Shell Script Execution on macOS and Linux
Content: View full analysis
Remediation: View remediation

T03 · Remote Payload Retrieval and Execution

Error

Location: SKILL.md:70
Finding: Unverified Remote PowerShell Script Execution on Windows
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access

Findings (2)

External Script Fetching

High

Category: Supply Chain
Confidence: 97% confidence
Finding: The skill instructs users to install software by piping a remotely fetched script directly into a shell (curl ... | bash). If the install endpoint, CDN path, TLS trust chain, or upstream distribution is compromised, arbitrary code would execute immediately on the user's machine with the user's privileges.
Content: Scanner excerpt · SKILL.md (reported line 66)May include surrounding context.

oo: command not found — install the oo CLI (other platforms: https://cli.oomol.com/install-guide.md):

bash
curl -fsSL https://cli.oomol.com/install.sh | bash # macOS / Linux

powershell

Vague Triggers

Medium

Category: Not specified by scanner
Confidence: 95% confidence
Finding: The description says to use this skill for "ANY Twelve Data request" and "Whenever a task involves Twelve Data," which is a broad activation condition without clear boundaries or exclusions. In a manifest, this can cause unintended invocation for loosely related mentions of Twelve Data rather than specific connector actions.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.