AI agents call list_ssl_keys to retrieve information from cPanel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Although this is a Read operation (retrieves data with no side effects), it carries high severity because SSL private keys are cryptographic secrets of extreme value. Exposing them to an AI agent or attacker grants ability to impersonate the account holder, decrypt encrypted communications, and compromise all HTTPS services.
From the tool's definition Tool name 'list_ssl_keys' and description 'List all SSL private keys on the account' indicate data retrieval without modification.
Documented attack patterns abuse exactly the kind of access list_ssl_keys gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and cPanel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_ssl_keys:
{
"version": "1",
"default": "deny",
"tools": {
"list_ssl_keys": {}
}
}list_ssl_keys is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List all SSL private keys on the account. It is categorised as a Read tool in the cPanel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the cPanel MCP Server MCP server in PolicyLayer and add a rule for list_ssl_keys: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches cPanel MCP Server. Nothing to install.
list_ssl_keys is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_ssl_keys rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_ssl_keys. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_ssl_keys is provided by the cPanel MCP Server MCP server (0xhayd3n/cpanel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from cPanel MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
164 cPanel MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.