MalwarePublished 7 Aug 2026

devplatform-stylelint-config (npm) · Malicious Code

Affects devplatform-stylelint-configSource GCVE Database

Malicious package : remove devplatform-stylelint-config and rotate any secrets on hosts that installed it.

Data as of 7 Aug 2026, 15:28 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13548

What to do

Remove devplatform-stylelint-config 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
npmdevplatform-stylelint-config	Affected =35.7.4	Fixed in–

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Description

The npm package 'devplatform-stylelint-config' version 35.7.4 contains malicious code that executes upon library load. It downloads a platform-specific binary from obfuscated Cloudflare Workers and other domains, writes it to a hidden temporary location, sets executable permissions, and runs it detached without verifying its integrity. The package uses misleading naming and description to conceal its true behavior.

Impact

This malicious package can lead to arbitrary code execution on the host system where it is installed. The downloaded binary runs with the permissions of the user executing the package, potentially enabling unauthorized actions, persistence, or further compromise. The lack of integrity checks on the downloaded binary increases the risk of executing tampered or malicious payloads.

Defensive guidance

Users should immediately remove the 'devplatform-stylelint-config' package version 35.7.4 from their environments. Avoid installing or using this package until a trusted, verified version is available. Monitor for any unexpected binaries or processes spawned from npm packages. Consider using package integrity verification tools and restrict execution of untrusted binaries.

Summary

The 'devplatform-stylelint-config' npm package (version 35.7.4) includes a malicious payload embedded in its setup.js file, which is executed when the library loads. This setup script constructs obfuscated hostnames to download a platform-specific binary via HTTPS, stores it in a hidden temporary directory, modifies its permissions to be executable, and launches it detached from the main process. The binary download and execution occur without any hash or signature verification, increasing the risk of arbitrary code execution. The package's description and naming are deceptive, masking the malicious activity under the guise of an 'environment config reader' and 'analytics_state' telemetry gate.

References

npmjs.com/package/devplatform-stylelint-config/v/35.7.4 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 7 Aug 2026, 15:28 UTC

Technical details

References

Community reviews