D
Caution
48/100
2 hours ago

Notion MCP Server

Connects Claude Desktop and other MCP clients directly to Notion with secure SSE support for CRUD operations. Designed for cloud deployment with bearer authentication, rate limiting, and security headers.

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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Who stands behind it

piskunproject

Source: Glama

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// key findings
🚨
Known vulnerabilities in dependencies: 1 critical, 13 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 1 credential: NOTION_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 critical13 high6 medium11 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

high@modelcontextprotocol/sdk@1.24.3GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.24.3GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

highaxios@1.13.2GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

highaxios@1.13.2GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

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// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configACTOR_WEB_SERVER_PORT
configACTOR_WEB_SERVER_URL
configAPIFY_CONTAINER_PORT
configBASE_URL(override OpenAPI server base URL)
configLOG_LEVEL
🔐 secretNOTION_TOKENOPENAPI_MCP_HEADERS (JSON string of headers; overrides when present)
configOPENAPI_MCP_HEADERS(JSON string of headers; overrides NOTION_TOKEN when present)
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

Secrets not logged

2 secret values sent to console.log

Redact or omit secret values from log output.

Production dependencies are patched

0 critical, 13 high severity in production deps — @modelcontextprotocol/sdk@1.24.3 (high), @modelcontextprotocol/sdk@1.24.3 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Dev dependencies

1 critical/high in dev-only deps (does not ship to users)

Upgrade dev dependencies when convenient.

Dependency freshness

3/19 production deps abandoned (no release in 2+ years): openapi-schema-validator@2023-05-24 (3.2y), openapi-types@2023-05-24 (3.2y), source-map-support@2023-06-09 (3.2y)

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: 9af0c42a6e2793aaab3683e769e2b4af504f2f3a
code hash: 55a532a3b178670a5530b59794790b65c8a634798f709877c531842ce37c456d
verified: 8/21/2026, 1:05:17 AM
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