registry / @scarn/cli / 0.8.2
@scarn/cli@0.8.2
Scarn runs AI agents over your backlog, on your machines. This CLI links your repo, designs pipelines with an agent, and runs the workers that execute them.
AI Security Review
scanned 3d ago · by lpm-firewall-aiThe install hook's network activity is a fallback to retrieve the package's own platform binary when npm fails to install its optional dependency. The flagged bundle uses credentials for matching GitHub or GitHub Container Registry requests, and the reviewed code did not show credential exfiltration.
Static reason
High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
During npm postinstall, only when the supported platform package cannot be resolved.
Impact
Completes installation of the CLI after an optional dependency download failure.
Mechanism
Fetches that package's metadata and tarball from the configured npm registry, extracts its binary, and writes it under dist/.
AI rationale
The install hook's network activity is a fallback to retrieve the package's own platform binary when npm fails to install its optional dependency. The flagged bundle uses credentials for matching GitHub or GitHub Container Registry requests, and the reviewed code did not show credential exfiltration.
Evidence
dist/
Network endpoints5
registry.npmjs.orgapi.github.comgithub.comghcr.iocontainers.dev
Decision evidence
public snapshotAI called this Clean at 94.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The only lifecycle hook is postinstall, which runs bin/postinstall.js.
- The fallback download uses the configured npm registry, defaulting to registry.npmjs.org.
- The postinstall fetches metadata for the selected platform package and version, then retrieves its tarball to recover the CLI binary.
- The bundled devcontainer code attaches GITHUB_TOKEN only for GitHub repository or GitHub tarball requests; its GHCR auth path is restricted to ghcr.io.
Evidence against
- The postinstall skips recovery when SCARN_DIST_DIR is set, the platform is unsupported, or the optional platform package resolves.
- The install-time network operation retrieves the package's platform binary and writes it under dist/.
- No reviewed source showed credentials, environment values, or command output being sent to an unrelated collector.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork
Source & flagged code
11 flaggedpackage.jsonView file
•scripts.postinstall = node bin/postinstall.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node bin/postinstall.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgdist/devcontainer/dist/spec-node/devcontainers-cli.jsView file
6var hL=Object.create;var LI=Object.defineProperty;var fL=Object.getOwnPropertyDescriptor;var dL=Object.getOwnPropertyNames;var pL=Object.getPrototypeOf,DL=Object.prototype.hasOwnPr...
L7: `)};function sw(A){var e=/\.[^.]*$/.exec(A);return e?e.index+1:A.length}function gw(A,e,t){if(A.reduce)return A.reduce(e,t);for(var i=0,r=arguments.length>=3?t:A[i++];i<A.length;i+...
L8:
L9: `),x())}function x(k){if(k||l--,u++,c===u&&l===0&&r!==void 0)return r(B||null)}}});var by=O((kz,Ny)=>{"use strict";Ny.exports=function A(e){var t=arguments.length;if(typeof e=="fun...
L10: `).join(`
...
L12: `)}function x1(A){A?process.env.DEBUG=A:delete process.env.DEBUG}function J1(){return process.env.DEBUG}function K1(A){A.inspectOpts={};let e=Object.keys(it.inspectOpts);for(let t=...
L13: `).map(e=>e.trim()
Findings
1 Critical8 High5 Medium5 Low
CriticalCredential Exfiltrationdist/devcontainer/dist/spec-node/devcontainers-cli.js
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processdist/devcontainer/dist/spec-node/devcontainers-cli.js
HighSame File Env Network Executiondist/devcontainer/dist/spec-node/devcontainers-cli.js
HighCommand Output Exfiltrationdist/devcontainer/dist/spec-node/devcontainers-cli.js
HighSemantic Analysis Limitedbin/postinstall.js#virtual:normalized:round1
HighKnown Malware Source Similaritydist/devcontainer/dist/spec-node/devcontainers-cli.js
HighKnown Malware Source Similaritybin/postinstall.js
HighKnown Malware Source Fingerprint Signaturedist/devcontainer/dist/spec-node/devcontainers-cli.js
Affected versions and remediation
This report applies to @scarn/cli@0.8.2.
See all versions of @scarn/cli for other recorded verdicts.
- Review the evidence and your use of @scarn/cli@0.8.2 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.