e-Gov Law MCP Server
MCP server for searching and retrieving Japanese laws from the e-Gov API, enabling natural language queries for legal information.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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ymadd
Source: Glama
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names
fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)
fast-xml-parser affected by DoS through entity expansion in DOCTYPE (no expansion limit)
fast-xml-parser has stack overflow in XMLBuilder with preserveOrder
fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters
Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
3/3 tools missing one or more hints — get_article (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_law_text (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_laws (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Production dependencies are patched
1 critical, 2 high severity in production deps — fast-xml-parser@4.5.3 (critical), fast-xml-parser@4.5.3 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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