Which versions of react-vite-assert are malicious?

The following npm versions of react-vite-assert are flagged malicious: 1.4.1. Treat any of these as compromised.

How do I remediate react-vite-assert if I installed it?

Remove react-vite-assert from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed react-vite-assert — how do I know if it already compromised me?

If react-vite-assert was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is react-vite-assert part of a known attack campaign?

Yes — react-vite-assert is associated with the IN-MAL-2026-006845 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find react-vite-assert across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for react-vite-assert (version 1.4.1).

Malicious package

react-vite-assertnpm

Advisory published Jun 16, 2026Updated Jun 16, 2026

react-vite-assert is a confirmed malicious npm package (MAL-2026-5933) that executes malicious code on install (malicious version 1.4.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in react-vite-assert (npm)

MAL-2026-5933

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall react-vite-assert

What this malware does

[email protected] executes attacker-controlled JavaScript whenever the package is imported. The main entry transitively loads src/features/extras/config.js, which runs a top-level async IIFE that issues an HTTPS GET to https://www.jsonkeeper.com/b/HXDNM, takes the data.config string from the response, wraps it with new Function('require', s), and invokes it with a createRequire(import.meta.url)-built require — granting the fetched code full Node.js access (filesystem, network, child_process, env). The fetch is retried up to 5 times. The remote URL and request headers are disguised by a fake local process shadow object whose keys are named DEV_API_KEY/DEV_SECRET_KEY/DEV_SECRET_VALUE, where DEV_API_KEY actually holds the paste URL and the other two hold a request header name/value — deliberate misdirection rather than configuration. jsonkeeper.com is an anonymous, mutable paste host: whoever controls /b/HXDNM can change the executed payload at any time without republishing the package. The combination of import-time auto-execution, anonymous mutable code source, eval of fetched bytes with full require, and cover-story variable naming is unambiguous supply-chain attack tradecraft.

Malicious versions

1 flagged

1.4.1

Indicators of compromise (SHA-256)

746aecfafda9a8f780b53ef40a5697875c52514dfa6ebb29306992ad06128395

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for react-vite-assert (version 1.4.1).
If you installed it — respond
Remove react-vite-assert from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If react-vite-assert was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. react-vite-assert on npm has been identified as a malicious package (version 1.4.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-006845

References

npmjs.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks react-vite-assert-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

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