registry / @prosopo/procaptcha-bundle / 4.2.3
@prosopo/procaptcha-bundle@4.2.3
AI Security Review
scanned 2mo ago · by lpm-firewall-aiThe flagged environment-variable and dynamic-import behavior configures and prefetches named captcha dependencies during widget rendering. The package has no registry install hook or concrete malicious behavior in the inspected source.
Static reason
One or more suspicious static signals were detected.
Trigger
A host page imports or loads the browser bundle and renders a Procaptcha widget.
Impact
No unconsented host mutation, secret collection, or source-owned exfiltration was found.
Mechanism
Browser-side captcha rendering and detector prefetch.
AI rationale
The flagged environment-variable and dynamic-import behavior configures and prefetches named captcha dependencies during widget rendering. The package has no registry install hook or concrete malicious behavior in the inspected source.
Decision evidence
public snapshotAI called this Clean at 94.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- The runtime entry point dynamically loads Prosopo captcha modules and calls their detector-prefetch API with a supplied site key.
- Configuration reads Prosopo environment settings, including optional server and event-store URLs.
- The manifest exposes browser bundle entry points and contains build/test scripts, not an install lifecycle hook.
Evidence against
- No install, preinstall, or postinstall hook is declared.
- No source-owned network endpoint, credential harvesting, filesystem access, shell execution, or dynamic code evaluation was found.
- The inspected code mounts and manages a browser captcha widget; the dynamic imports are named package dependencies.
Behavioral surface
CryptoEnvironmentVarsFilesystem
HighEntropyStringsUrlStrings
Source & flagged code
5 flaggeddist/index.jsView file
4package = @prosopo/procaptcha-bundle; repositoryIdentity = captcha; dependency = @prosopo/procaptcha-common
L4: import { WidgetThemeResolver } from "./util/widgetThemeResolver.js";
L5: import { getWindowCallback } from "@prosopo/procaptcha-common";
L6: import { at } from "@prosopo/util";
High
Copied Package Dependency Bridge
Package metadata claims a different repository identity while copied source loads a runtime dependency bridge.
dist/index.jsView on unpkg · L435var startDetectorPrefetch = (siteKey, flags) => {
if (!siteKey) return;
Promise.all([import("@prosopo/procaptcha-frictionless"), import("@prosopo/procaptcha-common")]).then(([frictionless, common]) => {
frictionless.prefetchDetector(process.env.PROSOPO_DEFAULT_ENVIRONMENT, common.pickIpMode(flags), siteKey);
}).catch(() => void 0);
Low
Ai Review Evidence
The runtime entry point dynamically loads Prosopo captcha modules and calls their detector-prefetch API with a supplied site key.
dist/index.jsView on unpkg · L35src/util/configCreator.tsView file
Findings
1 High2 Medium8 Low
HighCopied Package Dependency Bridgedist/index.js
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowAi Review Evidencedist/index.js
LowAi Review Evidencesrc/util/configCreator.ts
LowSuspicious Lifecycle Evidencepackage.json
LowSuspicious Lifecycle Evidencepackage.json
Affected versions and remediation
This report applies to @prosopo/procaptcha-bundle@4.2.3.
See all versions of @prosopo/procaptcha-bundle for other recorded verdicts.
- Review the evidence and your use of @prosopo/procaptcha-bundle@4.2.3 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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