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Security audit

Strava

Security checks for vulnerabilities and agentic risk

Overview

This Strava skill is mostly coherent, but its first-time setup includes unverified remote installer commands that could execute arbitrary local code.

Review the oo CLI installation method before installing. Prefer an official, version-pinned installer or manually inspect and verify the downloaded script before execution, and confirm any Strava write action payload before allowing it to run.

A.I.G

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

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 remote script directly into bash, which executes unreviewed code fetched at runtime. If the remote host, transport, or script supply chain is compromised, this can lead to arbitrary code execution on the user's machine.

Content

Scanner excerpt · SKILL.md (reported line 88)May include surrounding context.

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The description says to use this skill for "ANY Strava request" and "Whenever a task involves Strava," which is a very broad activation condition that can overlap with many casual mentions of Strava. It does not provide constraints or negative examples to clarify when the skill should not be invoked.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.