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Security audit

maverick-confluence-mcp

Security checks for vulnerabilities and agentic risk

Overview

The skill provides clearly disclosed Confluence access, with explicit user control over content changes and expected OAuth credential storage.

Review the Atlassian permissions you grant and authorize specific content changes. Tool data passes through Atlassian's hosted service. Protect stored credentials, rerun setup only with freshly issued credentials, and revoke access when finished using the integration.

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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · SKILL.md (reported line 72)May include surrounding context.

md
- `MAVERICK_CONFLUENCE_MCP_EXPIRES_IN`
- `MAVERICK_CONFLUENCE_MCP_REFRESH_TOKEN_EXPIRES_AT`

These expiry fields are vault metadata, not tool arguments. They let mcporter make better pre-request refresh decisions for the access token and preserve refresh-token expiry information when the upstream OAuth response includes it.

**Setup-time prerequisites.** Setup needs `bash`, `jq`, and `mcporter` (>= v0.11.0) on `PATH`. These are gated by the install caller, not by `requires.bins` in this file, which gates agent-runtime eligibility. If setup fails, verify those binaries are present and current before retrying.

Unrestricted Tool Access

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill grants unrestricted tool access without appropriate constraints. An agent with unfettered tool access can perform arbitrary actions including file modification, network requests, and code execution.

Content

Scanner excerpt · SKILL.md (reported line 34)May include surrounding context.

The output includes the server's Instructions: field (read it) and a JSON Schema for every tool's parameters. Treat this as the authoritative reference for the rest of the session.

Step 2 - Call any tool from the catalog using the form maverick-confluence-mcp.<tool>:

sh
mcporter --config {baseDir}/mcporter.json call maverick-confluence-mcp.<tool> <arg>=<value> ...

Static analysis

No suspicious patterns detected.