MalwarePublished 12 Aug 2026

xcnvjfsiewlk9 (npm) · Malicious Code

Affects xcnvjfsiewlk9Source GCVE Database

Malicious package : remove xcnvjfsiewlk9 and rotate any secrets on hosts that installed it.

Data as of 12 Aug 2026, 16:37 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13843

What to do

Remove xcnvjfsiewlk9 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
npmxcnvjfsiewlk9	Affected =1.0.0	Fixed in–

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Description

The npm package 'xcnvjfsiewlk9' version 1.0.0 contains a malicious HTML file disguised as a Cloudflare Turnstile verification page. This HTML includes obfuscated JavaScript that redirects browsers to a potentially malicious URL. The package does not execute code upon installation or require and only triggers the payload if the HTML file is opened in a browser. This is a case of registry abuse hosting phishing content rather than a direct supply-chain code execution attack. The package should be removed, and any secrets on affected machines rotated due to potential compromise.

Impact

The package itself does not execute malicious code during installation or runtime in Node.js environments, limiting direct supply-chain exploitation. However, if the malicious index.html file is opened in a browser, it executes obfuscated JavaScript that redirects the user to a potentially harmful external site. The ghsa-malware advisory indicates that systems with this package installed may be fully compromised, implying that the package could be part of a broader compromise or that other malicious components may be present or installed alongside it. This poses a risk of credential theft or further system compromise if the malicious redirect is followed.

Defensive guidance

Remove the 'xcnvjfsiewlk9' package version 1.0.0 from all affected systems. Rotate all secrets and keys stored on those systems using a separate, uncompromised device. Since the package does not execute code on install or require, the main risk is from opening the HTML file in a browser; avoid opening any files from this package in browsers. Monitor for any signs of broader compromise beyond this package.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 12 Aug 2026, 16:37 UTC

Technical details

References

Community reviews