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Security audit

qq-mail-reader

Security checks for vulnerabilities and agentic risk

Overview

This QQ Mail reader is not malicious, but it needs review because generic email requests could trigger access to a configured private mailbox.

Install only if you intend this skill to access your QQ mailbox. Keep the authorization code in the documented secrets file with owner-only permissions, and treat generic requests like checking recent or new mail as potentially authorizing access to that configured QQ inbox.

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
  • 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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The trigger phrases are broad enough to match many generic email-related requests, which can cause the agent to invoke this skill without clear user intent to access a specific QQ mailbox. Because the skill uses stored mailbox credentials and reads private email content, overbroad routing increases the chance of unintended access to sensitive data.

Content

No source excerpt is available for this finding.

Natural-Language Policy Violations

Low
Category
Not specified by scanner
Confidence
61% confidence
Finding

The natural-language description is specific to QQ邮箱 and is written entirely in Chinese, but the file does not indicate whether this language/service restriction is an explicit user choice or a documented regional constraint. Under the policy, language or locale constraints should be opt-in or clearly justified when they limit behavior.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.