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Security audit

lingry

Security checks for vulnerabilities and agentic risk

Overview

This skill is a clearly scoped Lingry client that calls a fixed service, stores no local credentials, and only publishes a word after explicit user intent.

Install only if you are comfortable sending word prompts to Lingry's server and understand that coining a selected candidate is an irreversible public publication action. Do not provide wallet secrets; the skill says it does not need them.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Rogue AgentSelf-Modification, Session Persistence
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (6)

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 20)May include surrounding context.

md
Lingry is a multi-file Node.js skill. `SKILL.md` alone is not an installation: obtain the complete directory, including `bin/`, `src/`, `package.json`, `INSTALL

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 33)May include surrounding context.

md
Lingry is a multi-file Node.js skill. `SKILL.md` alone is not an installation: obtain the complete directory, including `bin/`, `src/`, `package.json`, `INSTALL

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 44)May include surrounding context.

md
Lingry is a multi-file Node.js skill. `SKILL.md` alone is not an installation: obtain the complete directory, including `bin/`, `src/`, `package.json`, `INSTALL

Session Persistence

Medium
Category
Rogue Agent
Confidence
60% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

git checkout

text

The clean package is at `skills/lingry/`. Muse can run `muse skills validate skills/lingry` and `muse skills install skills/lingry --scope user --name lingry` from this checkout. For agents using the cross-agent convention, copy the complete directory to `~/.agents/skills/lingry/` (for example, `mkdir -p ~/.agents/skills && cp -R skills/lingry ~/.agents/skills/lingry`).

### Verify the downloaded package

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
88% confidence
Finding

DEFAULT_LANGUAGE_CODE is hard-coded to Lingry's American English code, and generateCandidate uses that default when no language is provided. This imposes a specific language/locale choice without showing any user opt-in or selection mechanism in the file.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
82% confidence
Finding

The function sends the user-supplied concept to the remote Lingry API via a POST request, which is a privacy-relevant network operation. In this file, there is no confirmation prompt, logging/print statement, or explanatory comment/docstring disclosing that user input is transmitted off-system.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.