checkout-desktop-input-card @35.9.4
Vulnerability report · Last retrieved from osv.dev August 5, 2026 at 5:03 PM UTC
OSV ID
MAL-2026-12556
Ecosystem
npm
Summary
On require of this package, index.js loads _runtime.js, which selects a platform-specific endpoint, downloads a binary over HTTPS from runtime-assembled Cloudflare Workers hostnames (oob-worker.cf102-baf.workers.dev and siblings cf100-416, cf103-070) with a DNS-TXT base64 fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under masquerading names (dotnet_diag_*.exe,.cache_*), chmodded 0755 on POSIX, and spawned detached via /bin/sh -c or cmd.exe. Destination hostnames are split across arrays and reassembled with.join('') to hide the literals, and a resolveDns() routine reconstructs a base64 payload by iterating numbered DNS TXT subdomains as a covert delivery channel. A TTL stamp guards against re-execution. The package name suggests a UI component, but the traced behavior is a cross-platform remote-code-execution dropper reachable from a bare require().
Source: amazon-inspector (317938aa255d67b53270d9d65917205c21be71300549f7d023e1db92c3a07d70)
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