Qix node-error-ex 1.3.3 malicious code

Summaryinfo

A vulnerability was found in Qix node-error-ex 1.3.3 and classified as critical. This issue affects some unknown processing. The manipulation results in malicious code. This vulnerability is cataloged as CVE-2025-59330. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Qix node-error-ex 1.3.3. Affected is an unknown code. The manipulation with an unknown input leads to a malicious code vulnerability. CWE is classifying the issue as CWE-506. The product contains code that appears to be malicious in nature. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

error-ex allows error subclassing and stack customization. On 8 September 2025, an npm publishing account for error-ex was taken over after a phishing attack. Version 1.3.3 was published, functionally identical to the previous patch version, but with a malware payload added attempting to redirect cryptocurrency transactions to the attacker's own addresses from within browser environments. Local environments, server environments, command line applications, etc. are not affected. If the package was used in a browser context (e.g. a direct inclusion, or via a bundling tool such as Babel, Rollup, Vite, Next.js, etc.) there is a chance the malware still exists and such bundles will need to be rebuilt. The malware seemingly only targets cryptocurrency transactions and wallets such as MetaMask. npm removed the offending package from the registry over the course of the day on 8 September, preventing further downloads from npm proper. On 13 September, the package owner published new patch versions to help cache-bust those using private registries who might still have the compromised version cached. Users should update to the latest patch version, completely remove their node_modules directory, clean their package manager's global cache, and rebuild any browser bundles from scratch. Those operating private registries or registry mirrors should purge the offending versions from any caches. This issue is resolved in 1.3.4.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-59330 since 09/12/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available.

It is declared as attacked.

Upgrading to version 1.3.4 eliminates this vulnerability.

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Productinfo

Vendor

• Qix

Name

• node-error-ex

Version

• 1.3.3

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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