🛡️ MAL-2026-12539 — certificates-revocation-utils

Malicious code in certificates-revocation-utils (npm)

Source: amazon-inspector

On module load, index.js requires _vendor.js which fetches a platform-specific binary from runtime-reconstructed Cloudflare Workers hostnames (assembled via split-string concatenation such as ['oob-worker.','cf101-','adf.workers.','de','v'].join('')) with a DNS-TXT base64 chunked fallback resolved via *.dl.wel1.ru. The fetched bytes are written to a temp path with a randomized name, chmod 0755'd on POSIX, and executed via detached cp.spawn('/bin/sh',['-c', fp+' &'],{detached:true}) or cp.spawn('cmd.exe',['/c','start','/b',fp]). The download URL is not pinned, not hash-verified, and unrelated to the package's stated purpose ("shared utilities"). Additional obfuscation hides the child_process require and chmodSync call (require('child_'+'process'), fs['chmod'+'Sync']), and a /tmp/.analytics_state stamp gates single-execution-per-TTL. Requiring or installing this package causes arbitrary attacker-controlled code to execute on the installer's machine.