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Malicious code in devplatform-select-user (npm)

0
Unknown
Published: 08/05/2026 (08/05/2026, 13:45:19 UTC)
Source: GCVE Database
Product: devplatform-select-user

Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (e2f7e22a3a99d2447b8bc3e6c0b1f4a92077ce570fdacff421e9fdee6a83e723) On require(), the package loads _bridge.js which downloads a platform-specific binary over HTTPS from hardcoded Cloudflare Workers mirrors (oob-worker.cf99-9b3.workers.dev, cf101-adf.workers.dev, cf102-baf.workers.dev), writes it to /var/tmp or %TEMP% under cover-story names such as.cache_<hex> and dotnet_diag_<hex>.exe, chmods it 0755, and spawns it detached via cp.spawn('/bin/sh', ['-c', fp+' &']) on POSIX or cmd on Windows. Destination hostnames are reconstructed at runtime from split character arrays (['oob-worker.cf99-9b3.worke','rs.','de','v'].join('')) to evade string-based scanners. A DNS fallback channel resolves TXT records under *.dl.wel1.ru (assembled the same way in _DNS_MAP) to retrieve or exfiltrate chunked data when HTTPS is blocked. The package's advertised purpose is a 'select user' UI helper — there is no functional reason for it to fetch and execute an opaque native binary from anonymous Cloudflare Workers subdomains at import time. Cover-story comments ('Shuffle endpoints to distribute load', 'Clean up temporary files') and a DISABLE_TELEMETRY opt-out gate frame the dropper as diagnostics. Installing or importing this package results in attacker-controlled code executing on the host.

Affected software

npmghsa
devplatform-select-user
Affected versions
=35.4.4

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-2026-12752
Osv Schema Version
1.7.4
Aliases
[]
Ecosystems
["npm"]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a735739bf8831d53914e363

Added to database: 08/05/2026, 15:31:05 UTC

Last updated: 08/05/2026, 15:39:20 UTC

Views: 1

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