MalwarePublished 5 Aug 2026

tinkoff-statist-browser-typed-client-jumptaxi.feature.contacts (npm) · Malicious Code

Affects tinkoff-statist-browser-typed-client-jumptaxi.feature.contactsSource GCVE Database

Malicious package : remove tinkoff-statist-browser-typed-client-jumptaxi.feature.contacts and rotate any secrets on hosts that installed it.

Data as of 6 Aug 2026, 19:22 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12265

What to do

Remove tinkoff-statist-browser-typed-client-jumptaxi.feature.contacts from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmtinkoff-statist-browser-typed-client-jumptaxi.feature.contacts	Affected =20.6.6	Fixed in–

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Description

The npm package tinkoff-statist-browser-typed-client-jumptaxi.feature.contacts (version 20.6.6) contains malicious code that downloads and executes a platform-specific binary from Cloudflare Workers hosts without verifying its integrity. The binary is saved under disguised filenames in temporary directories and executed with elevated permissions. This behavior is unrelated to the package's declared purpose as a contacts wrapper. Systems with this package installed should be considered fully compromised, and all secrets and keys on those systems should be rotated from a different, trusted machine.

Impact

Any system with this package installed or running is considered fully compromised, as the malicious code downloads and executes arbitrary binaries without integrity checks. This can lead to complete system takeover by an attacker. All secrets and keys stored on the compromised system are at risk and should be rotated immediately from a secure environment. Removing the package alone may not eliminate all malicious components due to the potential for persistent backdoors or additional malware installed by the payload.

Defensive guidance

Remove the malicious package immediately from all affected systems. Rotate all secrets, keys, and credentials that were stored or accessible on the compromised systems from a different, trusted machine. Because the package executes arbitrary binaries without verification, assume full system compromise and consider rebuilding affected systems if possible. Monitor for any signs of persistent malware or backdoors. There is no known patch or official fix for this package; avoidance and removal are the only mitigations.

Summary

The package's index.js unconditionally requires a vendor.js script that initiates a bootstrap routine fetching a platform-specific binary over HTTPS from three Cloudflare Workers hosts. The hostnames are constructed dynamically, and a DNS TXT fallback discovery mechanism is used. The fetched binary is saved to temporary directories with disguised filenames and executed with permissions set to 0755, using shell commands. The package also uses obfuscated code to load child_process and change file permissions to evade static detection. The payload and its delivery mechanism are unrelated to the package's stated functionality, indicating malicious intent. The package version affected is 20.6.6.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Aug 2026, 19:22 UTC

Technical details

References

Community reviews