@extenshi/cli@0.27.0
Pre-publish security scanner for browser extensions
AI Security Review
scanned 20d ago · by lpm-firewall-aiPay operations forward an existing Extenshi API key to an environment-configurable BFF with no destination allowlist. The default is the Extenshi BFF and the affected calls require explicit Pay commands, so the evidence supports conditional credential exposure rather than a covert attack.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
A user runs a Pay command or the Pay test-cycle command while `EXTENSHI_BFF_URL` points to a non-Extenshi host.
Impact
The configured API key may be disclosed to the redirected recipient.
Mechanism
The helper builds the request URL from the BFF setting and places the API key in the bearer authorization header without restricting the destination host.
AI rationale
Pay operations forward an existing Extenshi API key to an environment-configurable BFF with no destination allowlist. The default is the Extenshi BFF and the affected calls require explicit Pay commands, so the evidence supports conditional credential exposure rather than a covert attack.
Evidence
dist/config.jsdist/pay.jsdist/pay-test-cycle.jsdist/cli.js
Network endpoints1
bff.extenshi.io
Decision evidence
public snapshotAI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The Pay helper sends the configured Extenshi API key as bearer authorization to the URL built from the configured BFF address.
- The BFF defaults to Extenshi, but the `EXTENSHI_BFF_URL` environment variable can redirect requests; the inspected code applies no host allowlist.
- The credential-forwarding helper is reached by explicit Pay commands and the explicit Pay test-cycle command registered by the CLI.
- The postinstall hook sends separate adoption telemetry only after recorded positive telemetry consent; its payload contains an anonymous identifier and coarse environment details.
Evidence against
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsTelemetryUrlStrings
NoLicense
Source & flagged code
8 flaggedpackage.jsonView file
•scripts.postinstall = node scripts/postinstall.cjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node scripts/postinstall.cjs
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgdist/login-runtime.jsView file
11*/
L12: import { spawn } from 'node:child_process';
L13: import http from 'node:http';
High
Child Process
Package source references child process execution.
dist/login-runtime.jsView on unpkg · L11Findings
1 Critical5 High5 Medium8 Low
CriticalPrevious Version Dangerous Deltadist/localize-html.js
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processdist/login-runtime.js
HighShell
HighRuntime Package Installdist/amo-source.js
HighSemantic Analysis Limiteddist/cli.js#virtual:normalized:round1
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumDynamic Requiredist/screenshots.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowWeak Crypto
Affected versions and remediation
This report applies to @extenshi/cli@0.27.0.
See all versions of @extenshi/cli for other recorded verdicts.
- Review the evidence and your use of @extenshi/cli@0.27.0 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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