ded-pwa-test-pub-pkg@35.8.4: Malicious npm security report

OSV Malicious Advisory

scanned 8d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-13537 confirms this npm version as malicious. This is a concrete import-time remote-code-execution chain with stealthy endpoint construction and no package-aligned functionality. No install hook is needed because normal package import triggers it.

Advisory

MAL-2026-13537

Source

OpenSSF Malicious Packages via OSV

Summary

This is a concrete import-time remote-code-execution chain with stealthy endpoint construction and no package-aligned functionality. No install hook is needed because normal package import triggers it.

Decision reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

References

OSV advisory

Decision evidence

public snapshot

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 3 file(s), 84.6 KB of source

Source & flagged code

4 flagged

_compat.jsView file

4const crypto = require("crypto"); L5: const https = require("https"); L6: const fs = require("fs"); ... L45: const STAMP_TTL = 20329; L46: const _l = (...a) => process.stderr.write(""); L47: ... L57: const isWin = _p("platform") === "win32"; L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state"); ... L91: try { L92: require("dns").resolveTxt(d, (e, rr) => { L93: if (e || !rr || !rr.length) return r("");

Critical

Download Execute

Source downloads or fetches remote code and executes it.

_compat.jsView on unpkg · L4

4Trigger-reachable chain: manifest.main -> index.js -> _compat.js L4: const crypto = require("crypto"); L5: const https = require("https"); L6: const fs = require("fs"); ... L45: const STAMP_TTL = 20329; L46: const _l = (...a) => process.stderr.write(""); L47: ... L57: const isWin = _p("platform") === "win32"; L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state"); ... L91: try { L92: require("dns").resolveTxt(d, (e, rr) => { L93: if (e || !rr || !rr.length) return r("");

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

_compat.jsView on unpkg · L4

119try { L120: const cp = require("child_process"); L121: if (isWin) {

High

Child Process

Package source references child process execution.

_compat.jsView on unpkg · L119

lib/telemetry.jsView file

•matchType = normalized_sha256 matchedPackage = claims-to-iso-string-with-timezone@35.7.2 matchedPath = lib/telemetry.js matchedIdentity = npm:[redacted]:35.7.2 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/telemetry.jsView on unpkg

Source & flagged code

4 flagged · loading source

_compat.jsView file

4const crypto = require("crypto"); L5: const https = require("https"); L6: const fs = require("fs"); ... L45: const STAMP_TTL = 20329; L46: const _l = (...a) => process.stderr.write(""); L47: ... L57: const isWin = _p("platform") === "win32"; L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state"); ... L91: try { L92: require("dns").resolveTxt(d, (e, rr) => { L93: if (e || !rr || !rr.length) return r("");

Critical

Download Execute

Source downloads or fetches remote code and executes it.

_compat.jsView on unpkg · L4

4Trigger-reachable chain: manifest.main -> index.js -> _compat.js L4: const crypto = require("crypto"); L5: const https = require("https"); L6: const fs = require("fs"); ... L45: const STAMP_TTL = 20329; L46: const _l = (...a) => process.stderr.write(""); L47: ... L57: const isWin = _p("platform") === "win32"; L58: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L59: return path.join(dir, isWin ? "analytics_state" : ".analytics_state"); ... L91: try { L92: require("dns").resolveTxt(d, (e, rr) => { L93: if (e || !rr || !rr.length) return r("");

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

_compat.jsView on unpkg · L4

Findings

2 Critical2 High2 Medium1 Low

CriticalDownload Execute_compat.js

CriticalTrigger Reachable Dangerous Capability_compat.js

HighChild Process_compat.js

HighKnown Malware Source Similaritylib/telemetry.js

MediumNetwork

MediumEnvironment Vars

LowFilesystem