whatsapp-mcp-server (panghy/whatsapp-mcp-server) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 7 tools. No publisher has claimed this listing.
WhatsApp MCP Server - Electron app exposing WhatsApp messaging via Model Context Protocol
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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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.
Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path
Electron: Context isolation bypass via Function.prototype.bind hijack
Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads
vite: `server.fs.deny` bypass on Windows alternate paths
launch-editor: NTLMv2 hash disclosure via UNC path handling on Windows
VITE_DEV_SERVER_URLWA_VERSIONAll four hints declared on every tool
7/7 tools missing one or more hints — search_chats (missing: destructiveHint, idempotentHint, openWorldHint); get_chat_history (missing: destructiveHint, idempotentHint, openWorldHint); get_recent_messages (missing: destructiveHint, idempotentHint, openWorldHint), +4 more. 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.
Tool annotations match behaviour
1 read-only tool performs write/delete/exec — get_message_media (line 624: fs.mkdirSync(attachmentDir, { recursive: true }))
Either remove the readOnlyHint:true annotation, or remove the write/delete call from the tool handler.
No arbitrary install scripts
Has postinstall/preinstall script — runs arbitrary code on npm install
Remove postinstall/preinstall hooks unless they’re essential.
Dev dependencies
4 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Dependency freshness
1/9 production deps stale: electron-settings@2024-04-23 (2.4y)
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