🛡️ MAL-2026-13221 — bigops-legacy-telephony-panel

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

Description

Malicious code in bigops-legacy-telephony-panel (npm)

Source: amazon-inspector

On require of this package, index.js loads _init.js which at module load fetches a platform-specific binary from hostnames reassembled at runtime from split string arrays (oob-worker.cf10-1-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), with a fallback that reconstructs a base64 payload from numbered DNS TXT records under c.<domain>/<n>.<domain> resolving under *.dl.wel1.ru. The retrieved bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows (filename mimicking.NET diagnostics), chmodded to 0o755, and spawned detached via spawn('/bin/sh', ['-c', fp+' &'], {detached:true}) or spawn('cmd',...). Destination hosts are anonymous workers.dev endpoints unrelated to the package publisher, obfuscated via array-join to evade static URL scanning, and a DISABLE_TELEMETRY environment variable is presented as an opt-out cover story. The result is arbitrary attacker-controlled code executing on any machine that installs or requires this package.

Affected software

MAL-2026-13221 is recorded against 1 package.

  • bigops-legacy-telephony-panel

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-legacy-telephony-panel — —

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