"CWEs derived from / under [N]" / "child weaknesses of [CWE]" / "more specific variants of [X]" — list immediate children of a CWE in the relationship tree. CWE is hierarchical; e.g. children of CWE-119 (memory bounds) include CWE-787 (out-of-bounds write) and CWE-125 (out-of-bounds read).
Part of the Mitre Cwe server.
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AI agents use children to create or modify resources in Mitre Cwe. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call children repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Mitre Cwe.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"children": {
"limits": [
{
"counter": "children_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Mitre Cwe policy for all 27 tools.
These attack patterns abuse exactly the kind of access children gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
"CWEs derived from / under [N]" / "child weaknesses of [CWE]" / "more specific variants of [X]" — list immediate children of a CWE in the relationship tree. CWE is hierarchical; e.g. children of CWE-119 (memory bounds) include CWE-787 (out-of-bounds write) and CWE-125 (out-of-bounds read).. It is categorised as a Write tool in the Mitre Cwe MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mitre Cwe MCP server in PolicyLayer and add a rule for children: 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 Mitre Cwe. Nothing to install.
children is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the children 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 children. 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.
children is provided by the Mitre Cwe MCP server (https://gateway.pipeworx.io/mitre-cwe/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 27 Mitre Cwe tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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