mongo-scout-mcp MCP Server

Scout your MongoDB databases with AI - safety features, live monitoring, and data quality

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled mongo-scout-mcp yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

Connect

Published as mongo-scout-mcp on npm. Runs locally.

Known issues

22 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 12.

Most discussed

sec: redact connection strings in error output and logs

Summary

The MongoDB connection URI (which may contain credentials) is exposed in multiple ways:

1. Process arguments: Visible in /proc/<pid>/cmdline on Linux since the URI is passed as a CLI argument
2. Error messages: MongoDB error messages often include the URI and are written to stderr without redaction in src/index.ts
3. Log files: logToolUsage in src/utils/logger.ts writes full tool arguments to disk without sanitization

Proposed Fix

1. Support MONGODB_URI en

Read the thread · 2026-02-27 · closed · 1 comment

sec: enforce upper bounds on query result limits

Summary

Several tools have no maximum cap on the limit parameter:

An agent could request limit: 10000000, causing memory exhaustion or excessive data transfer.

Proposed Fix

Add .max() to all Zod limit/sampleSize s

Read the thread · 2026-02-27 · closed · 1 comment

fix: security gaps in profiler filters, projections, monitoring bounds, export limits, field names, and logging

Security Findings

Six verified vulnerabilities ranging from High to Low-Medium severity.

1. HIGH — getProfilerStats accepts raw filters without operator blocking

• monitoring.ts:~485: filter passed directly to .find(filter) without preprocessQuery() / assertNoDangerousOperators()
• Allows $where/$function/$accumulator/$eval in profiler queries

2. HIGH — cloneCollection/exportCollection/analyzeQueryPerformance: unvalidated projections

• data-quality.ts:~318: proj

Read the thread · 2026-02-28 · closed · 0 comments

sec: validate nested collection name params (relationshipMapper)

Summary

Follow-up from #34 / PR #42.

wrapServerWithNameValidation validates top-level collection name params, but relationshipMapper in src/tools/data-quality.ts accepts foreignCollection nested inside relationships[]:

relationships: z.array(z.object({
  localField: z.string(),
  foreignCollection: z.string(),  // nested — not caught by wrapper
  foreignField: z.string(),
  as: z.string().optional(),
})),

A payload like `{ relationships: [{ foreignCollection: "

Read the thread · 2026-02-27 · closed · 0 comments

sec: preprocess textSearch filter consistently

Summary

In src/tools/advanced-operations.ts, the textSearch tool spreads user-provided filter directly into the query without passing it through preprocessQuery():

const query: any = { $text: { $search: searchText } };
if (filter) Object.assign(query, filter);

Every other tool that accepts a filter runs it through preprocessQuery() first. This inconsistency means:

• ObjectId string-to-ObjectId conversion does not happen for textSearch filters
• Any future filter

Read the thread · 2026-02-27 · closed · 0 comments

Most recent

sec: block dangerous MongoDB query operators ($where, $function, $accumulator)

Summary

No tool in the codebase blocks dangerous MongoDB query operators that enable arbitrary server-side JavaScript execution. The following operators pass through unchecked to the MongoDB server:

Read the thread · 2026-02-27 · closed · 0 comments

sec: block write-capable aggregation stages ($out, $merge) in pipeline validator

Problem

The aggregate tool is registered as a read operation, making it available in read-only mode. However, users can pass write-capable aggregation stages ($out, $merge) through it, effectively bypassing read-only enforcement.

The pipeline validator (src/utils/pipeline-validator.ts) currently only validates stage count and expensive stage limits — it does not check for write-capable stages.

Impact

• In read-only mode, a user (or an AI assistant via prompt injection) could ex

Read the thread · 2026-02-27 · closed · 0 comments

Log logger failures to stderr instead of silently swallowing them

Problem

In src/utils/logger.ts (lines 18, 31, 51), all file I/O errors during logging are silently swallowed:

} catch (error) {
  // Silently fail - logging is non-critical
}

While the comment notes that logging is non-critical, completely silent failures make it impossible to diagnose logging system problems — such as filesystem permission issues, disk-full conditions, or misconfigured log directories.

Fix

At minimum, write a single console.error (or `process.st

Read the thread · 2026-02-07 · closed · 0 comments

Validate admin command parameters, not just command names

Problem

In src/tools/monitoring.ts:210-228, runAdminCommand checks the command name against a whitelist but does not validate the command's parameters:

const commandName = Object.keys(command)[0]?.toLowerCase();
if (!commandName || !allowedCommands.includes(commandName)) {
  // blocked
}
// But no validation of command[commandName] contents

While the whitelist limits which commands can run, whitelisted commands may still accept dangerous nested parameters that could h

Read the thread · 2026-02-07 · closed · 0 comments

Set up CI with GitHub Actions

Problem

There is no CI/CD configuration in the project — no GitHub Actions, no automated testing on PRs, no release pipeline. Combined with the lack of tests, this means regressions can ship silently.

Recommendation

1. Add a basic GitHub Actions workflow that runs on PRs and pushes to main:
   • pnpm install
   • pnpm build (TypeScript compilation check)
   • tsc --noEmit (type checking)
   • pnpm test (once tests exist)
   • Lint check (ESLint)
2. Consider adding a release work

Read the thread · 2026-02-07 · closed · 0 comments

Add complexity limits for aggregation pipelines

Problem

In src/tools/document.ts:97, the aggregate tool accepts arbitrary pipeline arrays with no validation of depth or stage count:

const result = await db.collection(collection).aggregate(pipeline, options).toArray();

A deeply nested or excessively complex pipeline could exhaust MongoDB server resources (CPU, memory), acting as a potential DoS vector — especially in a context where an AI assistant constructs pipelines.

Recommendation

1. Cap the maximum number

Read the thread · 2026-02-07 · closed · 0 comments

Add try/finally for aggregation cursor cleanup in data-quality tools

Problem

In src/tools/data-quality.ts (~line 1253), aggregation cursors in findOrphans and similar functions are not wrapped in try/finally blocks:

const orphans = await collectionObj.aggregate(pipeline).toArray();
const countResult = await collectionObj.aggregate(countPipeline).toArray();

While toArray() closes the cursor on success, if an error occurs mid-execution (e.g., network timeout), the cursor could leak on the MongoDB server, eventually leading to resource

Read the thread · 2026-02-07 · closed · 0 comments

See all 16 reports Pod holds for mongo-scout-mcp — of 22 qualified upstream.

Firsthand observations

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For agents

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• 16 reported issues below
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