MalwarePublished 5 Aug 2026

devplatform-spa-plugin-auth (npm) · Malicious Code

Affects devplatform-spa-plugin-authSource GCVE Database

Malicious package : remove devplatform-spa-plugin-auth and rotate any secrets on hosts that installed it.

Data as of 5 Aug 2026, 16:42 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-12761

What to do

Remove devplatform-spa-plugin-auth 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-spa-plugin-auth	Affected =35.4.5	Fixed in–

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Description

The npm package devplatform-spa-plugin-auth version 35.4.5 contains malicious code that, upon loading, fetches and executes an attacker-controlled native binary from multiple remote hosts. This behavior is unexpected for an SPA auth-token plugin and results in full host code execution on any machine using this package version. The malicious payload is downloaded via HTTPS or DNS TXT record fallback, saved to temporary storage, given execute permissions, and run silently in the background. No official patch or remediation guidance is currently provided.

Impact

Any system that installs and requires devplatform-spa-plugin-auth version 35.4.5 is at risk of silent remote code execution. The attacker-controlled native binary can execute arbitrary commands with the privileges of the user running the Node.js process, potentially leading to full system compromise. The malicious code fetch mechanism and execution are stealthy, with suppressed error output and a marker file to avoid repeated runs, increasing the likelihood of persistent undetected compromise.

Defensive guidance

Until an official fix or removal is available, users should avoid installing or using devplatform-spa-plugin-auth version 35.4.5. If already installed, remove the package and any related artifacts immediately. Monitor for suspicious processes or files matching the described behavior. Consider using package integrity verification and supply chain security tools to detect malicious dependencies.

Summary

The devplatform-spa-plugin-auth npm package version 35.4.5 includes a main entry script that automatically invokes a start() routine on require. This routine dynamically constructs hostnames and retrieves a native binary payload from Cloudflare Workers domains or fallback DNS TXT records hosted on suspicious domains. The binary is saved to a temporary location on the host filesystem, permissioned for execution, and launched detached via system shell commands. The package suppresses repeated execution via a marker file and silences error output. Since the package is advertised as an SPA auth-token plugin, this behavior is unauthorized and malicious, enabling full arbitrary code execution controlled by the attacker operating the remote infrastructure.

References

npmjs.com/package/devplatform-spa-plugin-auth/v/35.4.5 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Aug 2026, 16:42 UTC

Technical details

References

Community reviews