registry / resend-cli / 2.16.0
resend-cli@2.16.0
The official CLI for Resend
AI Security Review
scanned 2mo ago · by lpm-firewall-aiDirect inspection shows no install-time execution or credential/command-output exfiltration. Scanner findings conflate package-aligned API use and bounded telemetry with malicious behavior.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Running the resend CLI
Impact
Performs requested account operations; telemetry may disclose CLI usage metadata but no credential or command-output exfiltration was found.
Mechanism
Resend API client plus bounded CLI telemetry
AI rationale
Direct inspection shows no install-time execution or credential/command-output exfiltration. Scanner findings conflate package-aligned API use and bounded telemetry with malicious behavior.
Evidence
package.jsondist/cli.cjs
Network endpoints2
api.resend.comus.i.posthog.com/capture/
Decision evidence
public snapshotAI called this Clean at 94.0% confidence as Benign with medium false-positive risk.
Evidence for AI clean decision
Evidence against
- package.json has no preinstall, install, or postinstall hook.
- The bin entry is the user-invoked dist/cli.cjs CLI.
- Telemetry records command metadata, OS, Node version, interactivity, and flags; it does not include API keys.
- Telemetry POSTs only the defined cli.used event to PostHog and honors DO_NOT_TRACK or RESEND_TELEMETRY_DISABLED.
- API calls target the Resend API for the CLI's stated email-management functionality.
- child_process use launches the CLI telemetry flush and Commander subcommands, not harvested-command execution.
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 Ku=Object.create;var Si=Object.defineProperty;var wu=Object.getOwnPropertyDescriptor;var vu=Object.getOwnPropertyNames;var xu=Object.getPrototypeOf,Fu=Object.proto...
L3: `)}displayWidth(t){return qr(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]}?)`:""}Lr.suggestSimilar=Tu});var Yr=ke(Pi=>{var ju=require("node:events").EventEmitter,Bi=require("node:child_process"),Ze=require("node:path"),Uo=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 ${i[0]}?)`:""}Lr.suggestSimilar=Tu});var Yr=ke(Pi=>{var ju=require("node:events").EventEmitter,Bi=require("node:child_process"),Ze=require("node:path"),Uo=require("no...
L15: - specify the name in Command constructor or using .name()`);return o=o||{},o.isDefault&&(this._defaultCommandName=t._name),(o.noHelp||o.hidden)&&(t._hidden=!0),this._registerComma...
...
L26: Expecting one of '${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 zr(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@2.16.0.
See all versions of resend-cli for other recorded verdicts.
- Review the evidence and your use of resend-cli@2.16.0 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: .
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