Summary
Togoder Security scanned the npm package globalthis@1.0.4 on Oct 6, 2026. An AI review of 6 source files produced 3 medium, 2 low severity findings. The overall verdict is medium: the findings flag risky but common patterns (dynamic code, unsafe defaults, broad file or network access) rather than confirmed malware.
Findings 5
Indirect code execution via module import
NPS-3CC67D5EB62C
The file immediately invokes the exported function from './shim' at top-level (require-time). Since './shim' is not shown, this shim module can execute arbitrary code upon loading, including installing hooks, monkey-patching globals, harvesting environment variables/credentials, or performing network requests. Top-level execution on import is a common vector for malicious npm packages.
Potential global environment modification
NPS-5FEC5EAAD146
The term 'shim' typically implies modifying global objects or built-ins (e.g. patching process, console, require, or other prototypes). Such behavior can silently alter runtime semantics for the entire application, enabling interception of sensitive data or stealthy execution.
Opaque dependency
NPS-91175C3301E5
The actual behavior cannot be verified from this file alone — all logic resides in './shim'. The entry point provides no indication of what the shim does, which is a common obfuscation/encapsulation pattern in malicious packages.
Top-level code execution on import
NPS-3AF4FF2A402E
The module immediately executes logic at import time (checking self/window and falling back to Function). This is standard module initialization behavior, not inherently malicious, but it does run top-level code as soon as the module is loaded.
Dynamic code execution
NPS-175C6C859137
The code uses Function('return this')() as a fallback to obtain the global object. While this is a common polyfill pattern for universal/globalThis detection, use of the Function constructor to evaluate a string is a dynamic code execution vector. If the environment is manipulated (e.g., via prototype pollution or a compromised global context), this could theoretically execute unintended code. In most legitimate libraries this pattern is benign, but it warrants review.
Files reviewed
| File | Verdict | What the reviewer saw |
|---|---|---|
| auto.js | medium | The file is a thin wrapper that immediately executes an unspecified shim module at require-time, which is a potential vector for hidden malicious behavior such as credential harvesting, monkey-patching, or code execution, though no direct malicious code is visible. |
| implementation.browser.js | medium | The file is a common global-object polyfill with a minor dynamic code execution concern from Function('return this')(); no exfiltration, credential harvesting, or backdoor patterns were detected. |
| implementation.js | safe | Cleared by Jev triage; no further analysis needed |
| index.js | safe | No malicious patterns detected; the code is a standard polyfill loader using define-properties. |
| polyfill.js | safe | Cleared by Jev triage; no further analysis needed |
| shim.js | safe | This is a standard globalThis polyfill shim with no malicious patterns detected |
Frequently asked questions
Is globalthis safe to use?
No confirmed malware was found in globalthis@1.0.4, but the review flagged 3 medium, 2 low severity findings for risky patterns worth checking before you rely on it.
Does globalthis contain malware?
No malware was identified in globalthis@1.0.4 when Togoder Security scanned it on Oct 6, 2026. A new version can still introduce malicious code, so scan the exact versions in your lockfile.
How was globalthis checked?
Togoder Security downloaded the published npm package and had an AI model read its 6 source files, looking for install scripts, credential access, network exfiltration, obfuscation, backdoors and crypto-wallet theft. The results are cached by file hash and shown here.
How do I scan globalthis together with the rest of my dependencies?
Upload your lockfile at https://security.togoder.click/scan or call the API documented at https://security.togoder.click/api-docs. Files that have already been scanned, like the ones in globalthis@1.0.4, cost nothing.