Malicious code in devplatform-react-scripts (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (b482d551faa8ecb3cb337bd8bacfe5ec193f1bc2cad69b3998e935fbaf413efa) The package's index.js requires./_init on load. _init.js reconstructs Cloudflare Workers hostnames via split-and-join obfuscation (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT base64 fallback under *.dl.wel1.ru, fetches a platform-specific binary over HTTPS, writes it to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd /c start. A.analytics_state marker file and env-var opt-out names (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) provide telemetry cover. The advertised 'react-scripts adapter' purpose does not match the dropped-and-executed opaque binary. Any consumer that installs and requires this package receives arbitrary attacker code execution on their machine.
Malicious code in devplatform-react-scripts (npm)
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (b482d551faa8ecb3cb337bd8bacfe5ec193f1bc2cad69b3998e935fbaf413efa) The package's index.js requires./_init on load. _init.js reconstructs Cloudflare Workers hostnames via split-and-join obfuscation (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT base64 fallback under *.dl.wel1.ru, fetches a platform-specific binary over HTTPS, writes it to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd /c start. A.analytics_state marker file and env-var opt-out names (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) provide telemetry cover. The advertised 'react-scripts adapter' purpose does not match the dropped-and-executed opaque binary. Any consumer that installs and requires this package receives arbitrary attacker code execution on their machine.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12741
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a735739bf8831d53914d5ab
Added to database: 08/05/2026, 15:31:05 UTC
Last updated: 08/05/2026, 15:31:05 UTC
Views: 1
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.