CVE-2025-54313: eslint-config-prettier Compromise — High Severity but Windows-Only

A recent security vulnerability, CVE-2025-54313, has been identified in the widely used eslint-config-prettier package, which has over 30 million weekly downloads. The breach involved a malicious install script that targeted Windows systems, potentially allowing attackers remote-code execution on developer machines or CI hosts. The issue stemmed from a phishing attack on a maintainer's npm token, which led to the publication of compromised package versions without GitHub commits. Despite the high integrity impact, the actual risk is mitigated as the malicious payload is Windows-specific and most CI runners use Linux images. The affected versions have been deprecated, and new, clean versions have been released. The incident highlights the vulnerability of open-source ecosystems to supply chain attacks and emphasizes the need for improved security measures such as MFA enforcement and scoped tokens. Users are advised to avoid installing the compromised versions, audit their environments, and stay informed through official security updates.

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