Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Remote

Abluva-maintained fork of mcp-remote — a stdio proxy that connects MCP clients (Claude Desktop, Cursor, etc.) to remote MCP servers with OAuth.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_ENV_READ

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    src/lib/coordination.test.ts, line 74 fs.rmSync(tmpDir, { recursive: true, force: true })

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    src/lib/authorization-server-metadata.ts, line 57 const response = await fetch(metadataUrl, {

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/lib/utils.ts, line 2148 // example `Authorization: Bearer ${TOKEN}` will read process.env.TOKEN

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    src/lib/coordination.test.ts, line 74

    fs.rmSync(tmpDir, { recursive: true, force: true })

    src/lib/mcp-auth-config.ts, line 122

    await fs.unlink(filePath)

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    src/lib/authorization-server-metadata.ts, line 57

    const response = await fetch(metadataUrl, {

    src/lib/coordination.test.ts, line 109

    await fetch(`http://127.0.0.1:${port}/oauth/callback?code=test-code`).catch(() => {})

    src/lib/coordination.test.ts, line 189

    await fetch(`http://127.0.0.1:${first.callbackPort}/oauth/callback?code=test-code`).catch(() => {})

    Show more

    src/lib/coordination.test.ts, line 257

    await fetch(`http://127.0.0.1:${first.callbackPort}/oauth/callback?code=test-code`).catch(() => {})

    src/lib/coordination.test.ts, line 288

    await fetch(`http://127.0.0.1:${port}/oauth/callback?code=code-for-primary`).catch(() => {})

    src/lib/coordination.ts, line 64

    const response = await fetch(`http://127.0.0.1:${port}/wait-for-auth`, {

    src/lib/node-oauth-client-provider.ts, line 381

    response = await fetch(authorizationUrl.toString(), {

    src/lib/node-oauth-client-provider.ts, line 444

    consentResponse = await fetch(consentUrl.toString(), {

    src/lib/protected-resource-metadata.ts, line 133

    const response = await fetch(metadataUrl, {

    src/lib/protocol-detector.ts, line 30

    const res = await fetch(url, {

    src/lib/stateless-http-transport.ts, line 180

    return fetch(url, {

    src/lib/utils.ts, line 139

    if (!mirrored) return fetch(url, init)

    src/lib/utils.ts, line 147

    return fetch(url, { ...init, headers })

    src/lib/utils.ts, line 441

    const response = await fetch(`http://127.0.0.1:${port}/wait-for-auth?poll=false`, {

    src/lib/utils.ts, line 454

    const response = await fetch(`http://127.0.0.1:${port}/wait-for-auth?poll=false`, {

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    src/lib/utils.ts, line 2148

    // example `Authorization: Bearer ${TOKEN}` will read process.env.TOKEN

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 9cd1ca1a81d4. can delete files. can reach a host that is not written as a fixed address. reads an environment variable.

Date and source

Date checked:

View source

github.com

Commit graded: 9cd1ca1a81d402539825db7f72fc1571502027c1

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen