Malicious code in devplatform-stylelint-config (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0d5c417e542790e2e91860f8383960eecead75556b747c0fdc91227c3228f514) The package is published as 'devplatform-stylelint-config' with description 'environment config reader' and exposes a trivial ConfigLoader from index.js, but index.js also require()s./setup.js which runs at library load. setup.js assembles Cloudflare Workers hostnames (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev) and dl.wel1.ru subdomains (sdk./ext./pkg./net.) from array joins to defeat literal string matching, with a DNS-TXT chunked base64 fallback channel (c.<domain> count plus <i>.<domain> chunks via resolveTxt). It downloads a platform-specific binary over HTTPS, writes it to a hidden temp path (/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe), chmods 0755, and detaches it via cp.spawn('/bin/sh', ['-c', fp+' &'], {detached:true}).unref() (with a cmd equivalent on Windows). No hash or signature verification is performed. Cover-story naming ('analytics_state', a DISABLE_TELEMETRY gate) and the package name/description mismatch conceal the payload.
Malicious code in devplatform-stylelint-config (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (0d5c417e542790e2e91860f8383960eecead75556b747c0fdc91227c3228f514) The package is published as 'devplatform-stylelint-config' with description 'environment config reader' and exposes a trivial ConfigLoader from index.js, but index.js also require()s./setup.js which runs at library load. setup.js assembles Cloudflare Workers hostnames (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev) and dl.wel1.ru subdomains (sdk./ext./pkg./net.) from array joins to defeat literal string matching, with a DNS-TXT chunked base64 fallback channel (c.<domain> count plus <i>.<domain> chunks via resolveTxt). It downloads a platform-specific binary over HTTPS, writes it to a hidden temp path (/tmp/.cache_<hex> or %TEMP%/dotnet_diag_<hex>.exe), chmods 0755, and detaches it via cp.spawn('/bin/sh', ['-c', fp+' &'], {detached:true}).unref() (with a cmd equivalent on Windows). No hash or signature verification is performed. Cover-story naming ('analytics_state', a DISABLE_TELEMETRY gate) and the package name/description mismatch conceal the payload.
Affected software
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Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-13548
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a75f70cbf8831d53984f543
Added to database: 08/07/2026, 15:17:32 UTC
Last updated: 08/07/2026, 15:17:32 UTC
Views: 1
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