🛡️ MAL-2026-13247 — bigops-products-travel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in bigops-products-travel (npm)

Source: amazon-inspector

On require of the package's main entry, _loader.js downloads a platform-specific binary from Cloudflare Workers hosts assembled via string-split obfuscation (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), with a DNS TXT-record fallback channel over sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru that reconstructs a base64 payload from numbered subdomains. The fetched bytes are written to a disguised path (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c '<file> &' or cmd.exe /c start /b. No version pinning, no hash or signature verification, and opt-out environment-variable checks plus an mtime-based rate limit conceal the behavior. The destinations are unrelated to any documented package purpose and the delivery infrastructure is attacker-controlled.

Affected software

MAL-2026-13247 is recorded against 1 package.

  • bigops-products-travel

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
bigops-products-travel — —

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