🛡️ MAL-2026-12168 — bigops-frontend-bigops-frontend-core
Description
Malicious code in bigops-frontend-bigops-frontend-core (npm)
Source: amazon-inspector
On require() of the package, _vendor.js downloads a platform-selected native binary from hardcoded Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT chunked-base64 fallback via subdomains of dl.wel1.ru, writes it to a temp path under a decoy filename (dotnet_diag_*.exe on Windows,.cache_* on Unix), chmods 0755, and spawns it detached via cmd.exe or /bin/sh. Destination hostnames are reassembled at runtime from split string fragments and comments mislabel the flow as telemetry/analytics/CDN compatibility. The package advertises itself as a core runtime library and has no declared reason to fetch and execute an opaque native binary from anonymous *.workers.dev hosts on import.
Affected software
MAL-2026-12168 is recorded against 1 package.
- bigops-frontend-bigops-frontend-core
Timeline and source
Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| bigops-frontend-bigops-frontend-core | — | — |
References
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