registry / Remote code execution / solidity-testing-utils

solidity-testing-utils

This document describes the management of vulnerabilities for the project and all modules within the organization.

This report shows the evidence for solidity-testing-utils@1.2.0, the only known version.

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

The package contains a concrete remote code execution chain hidden behind its public API. The lack of lifecycle hooks limits automatic installation execution but does not mitigate the malicious runtime behavior.

Static reason

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

Trigger

Application calls the package's exported middleware factory.

Impact

Arbitrary code execution in the consuming user's environment.

Mechanism

Detached remote-payload fetch followed by dynamic Function execution.

Attack narrative

A consumer calling the exported middleware causes index.js to spawn lib/caller.js as a detached process. The child decodes a concealed JSONStorage URL, fetches a response field, constructs a function from that server-provided string, and invokes it with require access. The server can therefore supply arbitrary Node.js code after publication without modifying the package.

AI rationale

Evidence

index.jslib/caller.jspackage.json

Network endpoints1

api.jsonstorage.net/v1/json/2ef8c758-a96f-459e-b036-b3b90379a165/f89e8264-86c2-4684-94da-c3f82d59370f

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

Exported middleware starts a detached child process.
Child decodes an obscured remote URL and request header.
Remote response field is passed to Function constructor and invoked with require.
No install lifecycle hook; execution occurs when the package API is called.

Evidence against

Behavioral surface

Source

ChildProcessEnvironmentVarsNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 17 file(s), 52.6 KB of source, external domains: github.com

Source & flagged code

5 flagged

lib/caller.jsView file

2L3: const axios = require("axios"); L4: const process = { ... L12: (async function loadCallers(..._args) { L13: const src = atob(process.env.DEV_API_KEY); L14: const k = atob(process.env.DEV_SECRET_KEY);

Critical

Remote Response Code Execution

Source passes code obtained from a remote response into a dynamic execution sink.

lib/caller.jsView on unpkg · L2

High

Base64 Obscured Url

Source decodes a Base64-obscured HTTP endpoint at runtime.

lib/caller.jsView on unpkg · L2

•matchType = malicious_source_fingerprint_signature signature = 306e52008bef5331 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = rust-testing-utils@2.3.0 matchedPath = lib/caller.js matchedIdentity = npm:cnVzdC10ZXN0aW5nLXV0aWxz:2.3.0 similarity = 1.000 shingleOverlap = 12 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.

lib/caller.jsView on unpkg

12(async function loadCallers(..._args) { const src = atob(process.env.DEV_API_KEY); const k = atob(process.env.DEV_SECRET_KEY); const v = atob(process.env.DEV_SECRET_VALUE);

High

Ai Review Evidence

Child decodes an obscured remote URL and request header.

lib/caller.jsView on unpkg · L12

index.jsView file

32function runJobA(args) { const script = path.resolve(__dirname, "./lib/caller.js"); const child = spawn("node", [script, JSON.stringify(args)], { detached: true, stdio: "ignore" }); child.unref(); // allow parent to exit

High

Ai Review Evidence

Exported middleware starts a detached child process.

index.jsView on unpkg · L32

Source & flagged code

5 flagged · loading source

lib/caller.jsView file

Critical

Remote Response Code Execution

Source passes code obtained from a remote response into a dynamic execution sink.

lib/caller.jsView on unpkg · L2

High

Base64 Obscured Url

Source decodes a Base64-obscured HTTP endpoint at runtime.

lib/caller.jsView on unpkg · L2

High

Known Malware Source Fingerprint Signature

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

Findings

1 Critical5 High3 Medium3 Low

CriticalRemote Response Code Executionlib/caller.js

HighEval

HighBase64 Obscured Urllib/caller.js

HighKnown Malware Source Fingerprint Signaturelib/caller.js

HighAi Review Evidenceindex.js

HighAi Review Evidencelib/caller.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to solidity-testing-utils@1.2.0.

The versions list below shows the verdict for each recorded version.

Avoid installing solidity-testing-utils@1.2.0. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-08-23 03:30:24.049Z (UTC).

Source advisory published: 2026-08-23 03:14:19.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

1 known version

1.2.0latestshownMaliciousRemote Code ExecutionBlockPublishedAug 22, 2026, 12:29 AM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other remote code execution packages

Behavioral surface

Related packages

Other remote code execution packages

Source & flagged code