async-mutex-v3@3.1.0: Malicious npm security report (Block)

OSV Malicious Advisory

scanned 10d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-12514 confirms this npm version as malicious. Package name typosquats `async-mutex` but ships unrelated functionality. The default export `getPlugin` in index.js issues an HTTP request to a hardcoded bare IP endpoint (http://46.183.25.232:45000/icons/108) and passes the response's `credits` field into `new Function('require','module',...,'Promise', data.credits)`, executing attacker-controlled JavaScript with Node privileges (access to require, process,...

Advisory

MAL-2026-12514

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in async-mutex-v3 (npm)

Details

Package name typosquats `async-mutex` but ships unrelated functionality. The default export `getPlugin` in index.js issues an HTTP request to a hardcoded bare IP endpoint (http://46.183.25.232:45000/icons/108) and passes the response's `credits` field into `new Function('require','module',...,'Promise', data.credits)`, executing attacker-controlled JavaScript with Node privileges (access to require, process, Buffer). Cover-story variable names (`IconProvider`, `iconDomain` referencing cloudflare/fastly/akamai/gcore, path `/ajax/libs/font-awesome/...`, header `bearrtoken: 'logo'`) frame the code as an icon CDN helper, while the actually-used path hits the bare IP. Declared dependencies (better-sqlite3, @primno/dpapi, node-machine-id) are consistent with a credential-stealer post-exploitation pipeline. Any consumer that requires this package and invokes the default export executes whatever JavaScript the remote server returns.

Decision reason

One or more suspicious static signals were detected.; source fingerprint signature matched known malicious package; routed for review

References

OSV advisory OpenSSF JSON PACKAGE

Decision evidence

public snapshot

Behavioral surface

Source

EvalNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 5.94 KB of source

Source & flagged code

2 flagged

index.jsView file

149// Note: The code uses async/await, so we need to handle that L150: const evalFn = new Function( L151: 'require', 'module', 'exports', '__dirname', '__filename', 'console', 'process', 'global', 'Buffer', 'setTimeout', 'setInterval', 'clearTimeout', 'clearInterval', 'Promise',

High

Eval

Package source references dynamic code evaluation.

index.jsView on unpkg · L149

•matchType = malicious_source_fingerprint_signature signature = c06bd55d669269cb signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = poly-custom-api@5.3.1 matchedPath = index.js matchedIdentity = npm:cG9seS1jdXN0b20tYXBp:5.3.1 similarity = 1.000 shingleOverlap = 1 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

index.jsView on unpkg

Source & flagged code

2 flagged · loading source

index.jsView file

149// Note: The code uses async/await, so we need to handle that L150: const evalFn = new Function( L151: 'require', 'module', 'exports', '__dirname', '__filename', 'console', 'process', 'global', 'Buffer', 'setTimeout', 'setInterval', 'clearTimeout', 'clearInterval', 'Promise',

High

Eval

Package source references dynamic code evaluation.

index.jsView on unpkg · L149

•matchType = malicious_source_fingerprint_signature signature = c06bd55d669269cb signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = poly-custom-api@5.3.1 matchedPath = index.js matchedIdentity = npm:cG9seS1jdXN0b20tYXBp:5.3.1 similarity = 1.000 shingleOverlap = 1 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

index.jsView on unpkg

Findings

2 High1 Medium1 Low

HighEvalindex.js

HighKnown Malware Source Fingerprint Signatureindex.js

MediumNetwork

LowScripts Present