npm

checkout-subscription-holder @35.7.1

Vulnerability report · Last retrieved from osv.dev August 5, 2026 at 5:03 PM UTC

Malicious

OSV ID

MAL-2026-12594

Ecosystem

npm

Summary

On require() of the package, index.js loads _bootstrap.js inside a try/catch. _bootstrap.js reconstructs its download hosts via array.join("") string-splitting (assembling oob-worker.cf{101-adf,99-9b3,103-070,102-baf}.workers.dev and a *.dl.wel1.ru DNS-TXT base64 fallback resolver), downloads a platform-specific opaque binary, writes it to /var/tmp/.cache_<hex> on POSIX or TEMP\dotnet_diag_<hex>.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe. Filenames are chosen to masquerade as a dotnet diagnostic tool or generic cache, and a /tmp/.analytics_state marker gates re-execution. The advertised package purpose ("subscription holder") has no connection to the fetched-and-executed binary, and the destination hosts are string-split constants rather than a documented, publisher-owned domain.

Source: amazon-inspector (e7a62aaa04f6806d8ad86f8c9baaaddde733815a4d2f51bc3db803bf30998f4c)

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