MalwarePublished 5 Aug 2026

bigops-plugin-notification-builder (npm) · Malicious Code

Affects bigops-plugin-notification-builderSource GCVE Database

Malicious package : remove bigops-plugin-notification-builder and rotate any secrets on hosts that installed it.

Data as of 5 Aug 2026, 22:45 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-13232

What to do

Remove bigops-plugin-notification-builder 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
npmbigops-plugin-notification-builder	Affected =35.1.3	Fixed in–

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Description

The bigops-plugin-notification-builder npm package version 35.1.3 contains malicious code that, upon import, downloads and executes a platform-specific binary from obfuscated and suspicious external hosts. The payload is fetched either directly from Cloudflare Workers hosts or reconstructed from base64-encoded DNS TXT records if HTTPS fetching fails. The binary is saved to disguised temporary files, given executable permissions, and executed without any signature or hash verification. The malicious behavior is hidden using string splitting and obfuscation techniques to evade detection. A similar dropper mechanism is also embedded under an 'analytics SDK' disguise in the package.

Impact

If executed, this malicious package can run arbitrary code on the host system, potentially leading to full system compromise, unauthorized data access, or further malware deployment. The lack of signature or hash verification means the payload could be tampered with or replaced by attackers. The obfuscation and use of multiple delivery methods increase the difficulty of detection and analysis. This poses a significant risk to any environment that installs or uses this specific package version.

Defensive guidance

The best mitigation is to avoid using bigops-plugin-notification-builder version 35.1.3 entirely. Users should remove this package from their environments and replace it with trusted alternatives. Monitor dependency sources carefully and verify package integrity before installation. Since this is a malicious package, no vendor advisory or official fix is available; users must rely on removal and avoidance.

Summary

This threat involves a malicious npm package (bigops-plugin-notification-builder, version 35.1.3) that executes unauthorized code on the host system. The package's index.js loads a _bridge.js script that downloads a platform-specific binary from hardcoded, obfuscated Cloudflare Workers domains. If HTTPS retrieval fails, the binary is reassembled from DNS TXT records hosted on suspicious domains. The binary is saved to disguised temporary executable files and launched detached via shell commands without any integrity checks. The code uses string splitting and array joining to hide sensitive API calls and hostnames, complicating static analysis. A parallel malicious dropper exists in lib/telemetry.js, masquerading as an analytics SDK.

References

npmjs.com/package/bigops-plugin-notification-builder/v/35.1.3 (opens in a new tab)

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What to do

Affected software

Description

AI analysisMachine-generated, updated 5 Aug 2026, 22:45 UTC

Technical details

References

Community reviews