The eSign tool based on Model Context Protocol (MCP) supports functionalities such as file uploading, creation of signing processes, and querying the status of signings.
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esign-cn-open-source
Source: modelscope
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
form-data uses unsafe random function in form-data for choosing boundary
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
form-data: CRLF injection in form-data via unescaped multipart field names and filenames
APP_ID"": "你的应用ID",APP_SECRET"": "你的应用密钥"HOST"": "选择对应环境：",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
2/2 tools missing one or more hints — create_sign_flow (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); query_sign_flow (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.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Secrets stay with their owner
6 secret/sensitive values flow into network calls (APP_SECRET → dynamic, APP_SECRET → dynamic)
Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.
Production dependencies are patched
1 critical, 3 high severity in production deps — form-data@4.0.2 (critical), @modelcontextprotocol/sdk@1.8.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dependency freshness
2/5 production deps stale: formdata-node@2023-10-24 (2.8y), node-fetch@2023-11-30 (2.7y)
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