MCP Security Scanner (rezearcher/mcp-security-scanner) is an MCP server listed on the M8ven Trust Index. It scores 58 out of 100, grade D. It declares 4 tools. No publisher has claimed this listing.

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D
Caution
58/100

MCP Security Scanner

Audit any MCP server for tool-poisoning, prompt-injection, and data-exfiltration risk before connecting an agent.

→ rezearcher/mcp-security-scanner· listed on glama

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.

How we verified

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Who stands behind it

rezearcher

Source: Glama

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Install from

Glamanot scored here

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.

// key findings
⚠️
Known vulnerabilities in dependencies: 5 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
// tools this server exposes4 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

enrich_tech_risk

Security enrichment: tech-stack fingerprint + CVE mapping + EPSS + CISA KEV for a domain. Cost: $0.05 USDC per call (x402 micropayment).

enrich_domain

Firmographic + tech-stack enrichment: RDAP registrant/registrar, DNS records, certificate-transparency history, tech-stack fingerprint for a domain. Cost: $0.05 USDC per call via the shared MCP payment gate (the direct HTTP endpoint GET /enrich/domain is $0.01 — MCP tools/call is gated at a flat $0.…

scan_mcp_server

Security-audit a target MCP server for prompt-injection / tool-poisoning. Fetches the server's advertised tools and statically analyzes each for hidden instructions, data-exfiltration hints, dangerous capabilities, cross-tool shadowing, and invisible-unicode payloads (OWASP LLM01/LLM08). Returns fin…

scan_mcp_preview

FREE preview scan of a target MCP server for tool-poisoning / prompt-injection. Returns issue count, severity breakdown, and risk score — but NOT which tools or the evidence. Use this to check any MCP server (including your own) at no cost; if issues are found, call the paid scan_mcp_server for the …

// known CVEs in dependencies5 high25 low

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

highhono@4.7.11GHSA-3vhc-576x-3qv4

Hono JWK Auth Middleware has JWT algorithm confusion when JWK lacks "alg" (untrusted header.alg fallback)

highhono@4.7.11GHSA-88fw-hqm2-52qc

hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard

highhono@4.7.11GHSA-f67f-6cw9-8mq4

Hono JWT Middleware's JWT Algorithm Confusion via Unsafe Default (HS256) Allows Token Forgery and Auth Bypass

highhono@4.7.11GHSA-m732-5p4w-x69g

Hono Improper Authorization vulnerability

highhono@4.7.11GHSA-q5qw-h33p-qvwr

Hono vulnerable to arbitrary file access via serveStatic vulnerability

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// quality suggestions

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

4/4 tools missing one or more hints — enrich_tech_risk (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); enrich_domain (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); scan_mcp_server (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +1 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.

Tests exist

No test files found

Add tests that exercise each declared tool.

Production dependencies are patched

0 critical, 5 high severity in production deps — hono@4.7.11 (high), hono@4.7.11 (high)

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

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 4 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: ee1a1c79b327784dc0b3e602417c24f41e7e12ed
code hash: 36b6eb0a2ecdebc306f1801d7b7068e85608217500c86e193d94af12cb47934d
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