registry / resend-cli / 2.20.0
resend-cli@2.20.0
The official CLI for Resend
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe critical scanner matches are explained by normal CLI API functionality and optional telemetry. Source inspection found no lifecycle hook or concrete path that sends user credentials or command output to an attacker-controlled receiver.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
A user runs the resend command.
Impact
No unconsented install-time execution, credential exfiltration, or persistence was confirmed.
Mechanism
User-invoked email-service API client with opt-out telemetry.
AI rationale
The critical scanner matches are explained by normal CLI API functionality and optional telemetry. Source inspection found no lifecycle hook or concrete path that sends user credentials or command output to an attacker-controlled receiver.
Network endpoints2
api.resend.comus.i.posthog.com
Decision evidence
public snapshotAI called this Clean at 92.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The manifest exposes a user-invoked CLI binary and has no install lifecycle hook.
- The CLI sends opt-out anonymous usage telemetry after commands.
Evidence against
- No preinstall, install, or postinstall script is present.
- Telemetry records command names, versions, platform, and option names; it does not include the supplied API key or command output.
- Credential storage and API calls are explicit CLI features rather than install-time behavior.
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@2.20.0.
See all versions of resend-cli for other recorded verdicts.
- Review the evidence and your use of resend-cli@2.20.0 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.