@mcp-release/cli@0.2.0: Clean npm security report (Allow)

AI Security Review

scanned 16h ago · by lpm-firewall-ai

No confirmed malicious attack surface. The CLI validates a user-supplied MCP endpoint and can send user-selected credentials to that endpoint.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Explicit mcp-release check invocation.

Impact

No unconsented execution, credential harvesting, exfiltration, persistence, or destructive behavior established.

Mechanism

User-directed MCP validation requests and optional report output.

Rationale

Scanner matches arise from bundled dependencies, user-directed networking, and SSRF protection code. Source inspection found no lifecycle execution or package-controlled exfiltration path.

Evidence

package.jsondist/index.jsREADME.md

Decision evidence

public snapshot

AI called this Clean at 97.0% confidence as Benign with low false-positive risk.

Evidence for block

Evidence against

package.json has no preinstall, install, postinstall, or prepare hook.
dist/index.js only runs through the mcp-release CLI entrypoint.
Network requests target the user-supplied check URL; no package-controlled endpoint found.
Environment values are read only for explicitly selected header/token flags.
Cloud metadata address is in SSRF deny-list logic, not a request target.
The only package write is an explicit --out report path.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsEvalFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 1.81 MB of source, external domains: fetch.spec.whatwg.org, github.com, jimmy.warting.se, json-schema.org, mimesniff.spec.whatwg.org, raw.githubusercontent.com, spec.openapis.org, stackoverflow.com, tools.ietf.org, webidl.spec.whatwg.org, www.ietf.org, www.safaribooksonline.com, www.w3.org

Source & flagged code

4 flagged

dist/index.jsView file

34906function install() { L34907: globalThis.fetch = module2.exports.fetch; L34908: globalThis.Headers = module2.exports.Headers; ... L34910: globalThis.Request = module2.exports.Request; L34911: globalThis.FormData = module2.exports.FormData; L34912: globalThis.WebSocket = module2.exports.WebSocket; L34913: globalThis.CloseEvent = module2.exports.CloseEvent;

Critical

Builtin Api Tampering Exfiltration

Source mutates builtin networking, serialization, module-loading, or filesystem APIs while forwarding data to an external endpoint.

dist/index.jsView on unpkg · L34906

•Trigger-reachable chain: manifest.main -> dist/index.js Reachable file contains a blocking source-risk pattern.

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/index.jsView on unpkg

39* Constructs the CommanderError class L40: * @param {number} exitCode suggested exit code which could be used with process.exit L41: * @param {string} code an id string representing the error ... L970: var EventEmitter = require("events").EventEmitter; L971: var childProcess = require("child_process"); L972: var path = require("path"); ... L1019: this._outputConfiguration = { L1020: writeOut: (str) => process2.stdout.write(str), L1021: writeErr: (str) => process2.stderr.write(str), ... L1055: * @returns {Command[]} L1056: * @private L1057: */

High

Cloud Metadata Access

Source reaches cloud instance metadata or link-local credential endpoints.

dist/index.jsView on unpkg · L39

5942sourceCode = this.opts.code.process(sourceCode, sch); L5943: const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); L5944: const validate = makeValidate(this, this.scope.get());

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/index.jsView on unpkg · L5942

Source & flagged code

4 flagged · loading source

dist/index.jsView file

34906function install() { L34907: globalThis.fetch = module2.exports.fetch; L34908: globalThis.Headers = module2.exports.Headers; ... L34910: globalThis.Request = module2.exports.Request; L34911: globalThis.FormData = module2.exports.FormData; L34912: globalThis.WebSocket = module2.exports.WebSocket; L34913: globalThis.CloseEvent = module2.exports.CloseEvent;

Critical

Builtin Api Tampering Exfiltration

Source mutates builtin networking, serialization, module-loading, or filesystem APIs while forwarding data to an external endpoint.

dist/index.jsView on unpkg · L34906

•Trigger-reachable chain: manifest.main -> dist/index.js Reachable file contains a blocking source-risk pattern.

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/index.jsView on unpkg

39* Constructs the CommanderError class L40: * @param {number} exitCode suggested exit code which could be used with process.exit L41: * @param {string} code an id string representing the error ... L970: var EventEmitter = require("events").EventEmitter; L971: var childProcess = require("child_process"); L972: var path = require("path"); ... L1019: this._outputConfiguration = { L1020: writeOut: (str) => process2.stdout.write(str), L1021: writeErr: (str) => process2.stderr.write(str), ... L1055: * @returns {Command[]} L1056: * @private L1057: */

Findings

2 Critical1 High3 Medium5 Low

CriticalBuiltin Api Tampering Exfiltrationdist/index.js

CriticalTrigger Reachable Dangerous Capabilitydist/index.js

HighCloud Metadata Accessdist/index.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowEvaldist/index.js

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings