registry / resend-cli / 2.20.1
resend-cli@2.20.1
The official CLI for Resend
AI Security Review
scanned 2mo ago · by lpm-firewall-aiStatic findings reflect normal CLI networking, credential storage, telemetry, and webhook features. Direct inspection found no malicious install hook or concrete credential or command-output exfiltration path.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Running the resend CLI; forwarding requires the explicit --forward-to option.
Impact
No credential harvesting, command-output exfiltration, install-time execution, or persistence was confirmed.
Mechanism
Command telemetry and explicit webhook forwarding.
AI rationale
Static findings reflect normal CLI networking, credential storage, telemetry, and webhook features. Direct inspection found no malicious install hook or concrete credential or command-output exfiltration path.
Evidence
dist/cli.cjs
Network endpoints2
us.i.posthog.comapi.resend.com
Decision evidence
public snapshotAI called this Clean at 93.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The CLI sends anonymous usage telemetry to PostHog when a command is run.
Evidence against
- package.json has no preinstall, install, or postinstall hook.
- Telemetry records command metadata and option names, not option values or stored credentials.
- Telemetry is disclosed and can be disabled with an environment variable.
- Webhook forwarding is only enabled by the explicit --forward-to command option.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork
HighEntropyStringsMinifiedTelemetryUrlStrings
Source & flagged code
10 flaggeddist/cli.cjsView file
1Source sends the broad process environment to a literal external destination.
L1: #!/usr/bin/env node
L2: "use strict";var ju=Object.create;var xi=Object.defineProperty;var Pu=Object.getOwnPropertyDescriptor;var $u=Object.getOwnPropertyNames;var Gu=Object.getPrototypeOf,Hu=Object.proto...
L3: `)}displayWidth(t){return Lr(t).length}styleTitle(t){return t}styleUsage(t){return t.split(" ").map(o=>o==="[options]"?this.styleOptionText(o):o==="[command]"?this.styleSubcommandT...
...
L13: (Did you mean one of ${i.join(", ")}?)`:i.length===1?`
L14: (Did you mean ${i[0]}?)`:""}Jr.suggestSimilar=Vu});var Zr=Re(Qi=>{var zu=require("node:events").EventEmitter,Pi=require("node:child_process"),et=require("node:path"),Ko=require("no...
L15: - specify the name in Command constructor or using .name()`);ret
Critical
Hardcoded Runtime Data Exfiltration
Source sends credentials or rich application records to a package-controlled external receiver enabled by default.
dist/cli.cjsView on unpkg · L113(Did you mean one of ${i.join(", ")}?)`:i.length===1?`
L14: (Did you mean ${i[0]}?)`:""}Jr.suggestSimilar=Vu});var Zr=Re(Qi=>{var zu=require("node:events").EventEmitter,Pi=require("node:child_process"),et=require("node:path"),Ko=require("no...
L15: - specify the name in Command constructor or using .name()`);return o=o||{},o.isDefault&&(this._defaultCommandName=t._name),(o.noHelp||o.hidden)&&(t._hidden=!0),this._registerComma...
...
L26: Expecting one of '${i.join("', '")}'`);let r=`${t}Help`;return this.on(r,n=>{let s;typeof o=="function"?s=o({error:n.error,command:n.command}):s=o,s&&n.write(`${s}
L27: `)}),this}_outputHelpIfRequested(t){let o=this._getHelpOption();o&&t.find(r=>o.is(r))&&(this.outputHelp(),this._exit(0,"commander.helpDisplayed","(outputHelp)"))}};function Xr(e){r...
Findings
3 Critical5 High5 Medium5 Low
CriticalHardcoded Runtime Data Exfiltrationdist/cli.cjs
CriticalCommand Output Exfiltrationdist/cli.cjs
CriticalTrigger Reachable Dangerous Capabilitydist/cli.cjs
HighChild Processdist/cli.cjs
HighSame File Env Network Executiondist/cli.cjs
HighSandbox Evasion Gated Capabilitydist/cli.cjs
HighTrigger Reachable Command Output Exfiltrationdist/cli.cjs
HighTrigger Reachable Persistencedist/cli.cjs
MediumDynamic Requiredist/cli.cjs
MediumNetwork
MediumEnvironment Vars
MediumInstall Persistencedist/cli.cjs
Medium
Affected versions and remediation
This report applies to resend-cli@2.20.1.
See all versions of resend-cli for other recorded verdicts.
- Review the evidence and your use of resend-cli@2.20.1 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.