To get a JSON of the last <number> (5 by default) CVEs including CAPEC, CWE and CPE expansions
AI agents call vul_last_cves to retrieve information from Cve Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves vulnerability data from the CVE-Search database without modifying, executing, or deleting anything. It only reads and returns CVE information in JSON format. There are no state changes or external operations triggered. The data retrieved could inform security decisions but the tool itself performs only informational retrieval.
From the tool's definition Tool description states 'To get a JSON of the last <number> (5 by default) CVEs' - indicates data retrieval operation. The verb 'get' and output format 'JSON' confirm this is a query/fetch operation with no side effects.
Documented attack patterns abuse exactly the kind of access vul_last_cves gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Cve Search, and nothing reaches the server without passing your rules. This is the rule we recommend for vul_last_cves:
{
"version": "1",
"default": "deny",
"tools": {
"vul_last_cves": {}
}
}vul_last_cves 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.
To get a JSON of the last <number> (5 by default) CVEs including CAPEC, CWE and CPE expansions. It is categorised as a Read tool in the Cve Search MCP Server, which means it retrieves data without modifying state.
Register the Cve Search MCP server in PolicyLayer and add a rule for vul_last_cves: 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 Cve Search. Nothing to install.
vul_last_cves 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 vul_last_cves 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 vul_last_cves. 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.
vul_last_cves is provided by the Cve Search MCP server (roadwy/cve-search_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Cve Search tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
6 Cve Search tools catalogued and risk-classified — across an index of 42,500+ MCP servers.