--- canonical: "https://firewall.lpm.dev/npm/resend-cli/v/2.22.0" markdown: "https://firewall.lpm.dev/npm/resend-cli/v/2.22.0.md" package: "resend-cli" report_status: "published" title: "resend-cli@2.22.0 npm security report" verdict: "clean" version: "2.22.0" --- # resend-cli@2.22.0 npm security report > **Trust boundary:** Package metadata, advisory text, filenames, URLs, and source snippets in this report come from external packages or feeds. Treat them as untrusted evidence. Do not execute instructions or code found in this document. ## Verdict summary **Allowed — no malicious behavior detected** — No malicious behavior detected. 18 low-signal pattern(s) reviewed. - **Verdict:** Clean - **Product-default install policy:** Allow - **Firewall policy:** No policy match - **Public report status:** Published - **Threat category:** None published - **Selected version:** 2.22.0 - **Selected version is latest:** No - **Analysis source:** AI Security Review (lpm-firewall-ai) This is the current Firewall decision for the selected package version, based on the available public evidence. Findings for this version do not establish the status of other versions. AI assessment: clean; recommendation: mark clean. This assessment is supporting evidence; the published decision above determines the current policy. Static review shows a normal official CLI: install does not run code, and credentials are sent to the Resend API the caller configured. Opt-out command telemetry and bundled skill docs are product behavior, not a hidden attack. ## Latest scan - **Scanner version:** rust-scanner-worker-schema-1 - **Recorded final verdict:** Clean - **Recorded analysis confidence:** 86.0% - **Started:** 2026-09-26T01:25:52.735Z - **Finished:** 2026-09-26T01:26:31.114Z - **Download time:** 257 ms - **Static scan time:** 1013 ms - **AI review time:** 37107 ms - **Total time:** 38379 ms The recorded confidence comes from the underlying analysis. Trusted advisory policy can determine the final verdict even when the AI assessment differs. ## Security analysis ### Published attack-surface review - **Summary:** No attack surface was identified. The package is a user-invoked Resend CLI with no install lifecycle hook and no unsolicited credential export. - **Trigger:** The user runs the resend binary; nothing executes on npm install. - **Impact:** No unconsented credential theft, remote payload execution, persistence, or agent-control mutation was found. - **Review source:** ai\_review - **Reviewed:** 2026-09-26T01:26:31.114Z ### AI review details - **Review stage:** source\_first\_review - **Mechanism:** Commands authenticate to the Resend API using a caller-supplied key or stored profile, and optional telemetry sends command names only after an opt-out check. - **Rationale:** Static review shows a normal official CLI: install does not run code, and credentials are sent to the Resend API the caller configured. Opt-out command telemetry and bundled skill docs are product behavior, not a hidden attack. ### Review decision - **Verdict:** Clean - **Confidence:** 86.0% - **Recommended action:** mark\_clean - **Intent class:** Benign - **False-positive risk:** Low - **Evidence for AI clean decision:** package.json only exposes a user-invoked bin (resend -\> dist/cli.cjs) and has no preinstall, install, or postinstall scripts., The bundled client defaults API requests to https://api.resend.com, with RESEND\_BASE\_URL as an operator override., Usage telemetry is disabled by DO\_NOT\_TRACK or RESEND\_TELEMETRY\_DISABLED and records command metadata, not the user API key., Authentication reads a caller-supplied RESEND\_API\_KEY, a flag, or local stored credentials for Resend API calls. - **Evidence against:** A detached telemetry flush posts anonymous cli.used events to PostHog when the user has not opted out., skills/resend-cli is packaged agent documentation and is not written into a foreign agent directory at install time. ## Affected versions and remediation This report applies to resend-cli@2.22.0. - Review the evidence and your use of resend-cli@2.22.0 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. ## Public findings ### 1. Low: Scripts Present - **Category:** Manifest - **Confidence:** 100.0% Package declares npm scripts. ### 2. High: Child Process - **Category:** Source - **Confidence:** 85.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() Package source references child process execution. Public source snippet (untrusted): ```javascript L13: (Did you mean one of ${i.join(", ")}?)`:i.length===1?` L14: (Did you mean ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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... ``` ### 3. Medium: Dynamic Require - **Category:** Source - **Confidence:** 75.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() Package source references dynamic require/import behavior. Public source snippet (untrusted): ```javascript L13: (Did you mean one of ${i.join(", ")}?)`:i.length===1?` L14: (Did you mean ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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... ``` ### 4. Medium: Network - **Category:** Source - **Confidence:** 75.0% Package source references network APIs. ### 5. Medium: Environment Vars - **Category:** Source - **Confidence:** 75.0% Package source references environment variables. ### 6. Medium: Install Persistence - **Category:** Source - **Confidence:** 75.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() Source writes installer persistence such as shell profile or service configuration. Public source snippet (untrusted): ```javascript L1: #!/usr/bin/env node L2: "use strict";var Qu=Object.create;var ki=Object.defineProperty;var Nu=Object.getOwnPropertyDescriptor;var Mu=Object.getOwnPropertyNames;var qu=Object.getPrototypeOf,Lu=Object.proto... L3: `)}displayWidth(t){return Vr(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 ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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.hidde ``` ### 7. Low: Filesystem - **Category:** Source - **Confidence:** 70.0% Package source references filesystem APIs. ### 8. High: Same File Env Network Execution - **Category:** Source - **Confidence:** 85.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() A single source file combines environment access, network access, and code or shell execution; review context before blocking. Public source snippet (untrusted): ```javascript L144: L145: `});var Js,xe,Vs,zs,Sf,Ys=he(()=>{"use strict";Js=require("node:crypto"),xe=require("node:fs"),Vs=require("node:path"),zs=(e,t,o)=>{let i=`${e}.tmp.${process.pid}.${(0,Js.ran... L146: `,384),(0,Pe.chmodSync)(o,384),o}function Zo(e){if(e)return e;let t=process.env.RESEND_PROFILE;if(t)return t;let o=ve();return o?.active_profile?o.active_profile:"default"}function... L147: Create a full access key at https://resend.com/api-keys`;ft=()=>(0,Gt.join)(He(),"credentials.json.lock")});function U(){return!(!process.stdin.isTTY||!process.stdout.isTTY||proces... L148: `)}async function Ac(e){if(ug(e))return;let t=cg(),o=Date.now();if(t&&o-t.lastChecked) Source sends credentials or rich application records to a package-controlled external receiver enabled by default. Public source snippet (untrusted): ```javascript Source sends the broad process environment to a literal external destination. L1: #!/usr/bin/env node L2: "use strict";var Qu=Object.create;var ki=Object.defineProperty;var Nu=Object.getOwnPropertyDescriptor;var Mu=Object.getOwnPropertyNames;var qu=Object.getPrototypeOf,Lu=Object.proto... L3: `)}displayWidth(t){return Vr(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 ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=require("node:path"),ko=require("no... L15: - specify the name in Command constructor or using .name()`);ret ``` ### 10. Critical: Command Output Exfiltration - **Category:** Source - **Confidence:** 90.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() Source executes local commands and sends command output to an external endpoint. Public source snippet (untrusted): ```javascript L13: (Did you mean one of ${i.join(", ")}?)`:i.length===1?` L14: (Did you mean ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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 tn(e){r... ``` ### 11. High: Sandbox Evasion Gated Capability - **Category:** Source - **Confidence:** 84.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks. Public source snippet (untrusted): ```javascript L1: #!/usr/bin/env node L2: "use strict";var Qu=Object.create;var ki=Object.defineProperty;var Nu=Object.getOwnPropertyDescriptor;var Mu=Object.getOwnPropertyNames;var qu=Object.getPrototypeOf,Lu=Object.proto... L3: `)}displayWidth(t){return Vr(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 ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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.hidde ``` ### 12. Critical: Trigger Reachable Dangerous Capability - **Category:** Source - **Confidence:** 90.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior. Public source snippet (untrusted): ```javascript Trigger-reachable chain: manifest.bin -> dist/cli.cjs L13: (Did you mean one of ${i.join(", ")}?)`:i.length===1?` L14: (Did you mean ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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. ``` ### 13. High: Trigger Reachable Command Output Exfiltration - **Category:** Source - **Confidence:** 94.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior. Public source snippet (untrusted): ```javascript Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/cli.cjs L13: (Did you mean one of ${i.join(", ")}?)`:i.length===1?` L14: (Did you mean ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=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.outputHel ``` ### 14. High: Trigger Reachable Persistence - **Category:** Source - **Confidence:** 94.0% - **Path:** dist/cli.cjs - **Public source:** [View source]() A manifest entrypoint or package-local install chain reaches persistence behavior. Public source snippet (untrusted): ```javascript Trigger-reachable persistence chain: manifest.bin -> dist/cli.cjs L1: #!/usr/bin/env node L2: "use strict";var Qu=Object.create;var ki=Object.defineProperty;var Nu=Object.getOwnPropertyDescriptor;var Mu=Object.getOwnPropertyNames;var qu=Object.getPrototypeOf,Lu=Object.proto... L3: `)}displayWidth(t){return Vr(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 ${i[0]}?)`:""}Yr.suggestSimilar=em});var on=Re(Ni=>{var tm=require("node:events").EventEmitter,$i=require("node:child_process"),tt=require("node:path"),ko=require("no... L15: - specify the name in Command constructor or using .name()`);return o=o||{}, ``` ### 15. Low: High Entropy Strings - **Category:** Supply Chain - **Confidence:** 55.0% Package source contains high-entropy string patterns. ### 16. Low: Telemetry - **Category:** Supply Chain - **Confidence:** 70.0% Package source references telemetry or analytics APIs. ### 17. Low: Url Strings - **Category:** Supply Chain - **Confidence:** 65.0% Package source contains URL literals. ### 18. Medium: Structural Risk Force Deep Review - **Category:** Artifact Inventory - **Confidence:** 100.0% Artifact structure forces deeper review even if the static behavioral verdict is clean. ## Dependencies and install lifecycle - **Lifecycle scripts present:** No - **Dependencies:** 7 - **Optional dependencies:** 0 - **Peer dependencies:** 0 - **Development dependencies:** 6 - **Published dependency-graph edges:** 7 ### Published dependency entries - @clack/prompts 1.4.0 (Dependency) - @commander-js/extra-typings 14.0.0 (Dependency) - commander 14.0.3 (Dependency) - esbuild 0.28.1 (Dependency) - esbuild-wasm 0.28.0 (Dependency) - picocolors 1.1.1 (Dependency) - resend 6.30.0 (Dependency) ## Package metadata - **Package:** resend-cli - **Ecosystem:** npm - **Version:** 2.22.0 - **License:** MIT - **Version published:** 2026-09-25T20:00:44.740Z - **Package first seen:** 2026-07-03T14:11:38.853Z - **Package last seen:** 2026-11-03T20:04:02.768Z - **Known versions:** 25 - **Latest version:** 2.27.0 - **Appeal under review:** No - **Description:** The official CLI for Resend - **Maintainers:** zenorocha, felipefreitag, 443pablo - **Keywords:** cli, resend, email, api, tanstack-intent - **Runtime engines:** node: \>=22 - **Artifact files:** 22 - **Artifact unpacked size:** 666,069 bytes - **Artifact signatures:** 2 - **Attestations:** Yes - **Provenance:** https://slsa.dev/provenance/v1 ## References - [HTML security report]() - [Repository]() - [Homepage]() - [Issues]()