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devplatform-spa-plugin-i18next@35.2.1: Malicious npm security | LPM Firewall

registry / devplatform-spa-plugin-i18next / 35.2.1

devplatform-spa-plugin-i18next@35.2.1

OSV Malicious Advisory

scanned 10d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-12768 confirms this npm version as malicious. index.js unconditionally requires./_loader on load. _loader.js reassembles Cloudflare workers.dev hostnames (oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev) from split-string arrays, with a DNS-TXT covert-channel fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru (chunk-count from c.<domain>, base64 chunks from numbered subdomains)...

Advisory

MAL-2026-12768

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in devplatform-spa-plugin-i18next (npm)

Details

index.js unconditionally requires./_loader on load. _loader.js reassembles Cloudflare workers.dev hostnames (oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev) from split-string arrays, with a DNS-TXT covert-channel fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru (chunk-count from c.<domain>, base64 chunks from numbered subdomains). It fetches a platform-specific native binary, writes it to /var/tmp or %TEMP% under cover names such as dotnet_diag_<hex>.exe or.cache_<hex>, chmods 0755, and spawns it detached via /bin/sh -c '<file> &' or cmd /c start. A second module lib/telemetry.js (~81KB, disguised as an analytics SDK) duplicates the same fetch+chmod+spawn primitives using string-concatenated identifiers (require("child_"+"process"), fs["chmod"+"Sync"]) as a redundant stage. The i18next plugin name and analytics_state marker do not correspond to any translation functionality shipped in the tarball.

Decision reason

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

References

OSV advisory PACKAGE

Source & flagged code

4 flagged

_loader.jsView file

4const fs = require("fs"); L5: const https = require("https"); L6: const os = require("os"); ... L43: const CACHE_TTL = 22804; L44: const _l = (...a) => process.stderr.write(""); L45: ... L56: const isWin = _p("platform") === "win32"; L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L58: 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.

_loader.jsView on unpkg · L4

4Trigger-reachable chain: manifest.main -> index.js -> _loader.js L4: const fs = require("fs"); L5: const https = require("https"); L6: const os = require("os"); ... L43: const CACHE_TTL = 22804; L44: const _l = (...a) => process.stderr.write(""); L45: ... L56: const isWin = _p("platform") === "win32"; L57: const dir = isWin ? (process.env.TEMP || process.env.TMP || "C:\\Windows\\Temp") : "/tmp"; L58: 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.

_loader.jsView on unpkg · L4

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

High

Child Process

Package source references child process execution.

_loader.jsView on unpkg · L119

lib/telemetry.jsView file

•matchType = normalized_sha256 matchedPackage = bigops-products-loans@35.6.4 matchedPath = lib/telemetry.js matchedIdentity = npm:Ymlnb3BzLXByb2R1Y3RzLWxvYW5z:35.6.4 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

_loader.jsView file

Critical

Download Execute

Source downloads or fetches remote code and executes it.

_loader.jsView on unpkg · L4

Critical

Trigger Reachable Dangerous Capability

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

_loader.jsView on unpkg · L4

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

High

Child Process

Package source references child process execution.

_loader.jsView on unpkg · L119

lib/telemetry.jsView file

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

_loader.jsView file

Critical

Download Execute

Source downloads or fetches remote code and executes it.

_loader.jsView on unpkg · L4

Critical

Trigger Reachable Dangerous Capability

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

_loader.jsView on unpkg · L4

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

High

Child Process

Package source references child process execution.

_loader.jsView on unpkg · L119

lib/telemetry.jsView file

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

devplatform-spa-plugin-i18next@35.2.1

OSV Malicious Advisory

Decision evidence

Source & flagged code

Source & flagged code

Findings

Source & flagged code