Which versions of bender-rspack-config are malicious?

The following npm versions of bender-rspack-config are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate bender-rspack-config if I installed it?

bender-rspack-config establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

I already installed bender-rspack-config — how do I know if it already compromised me?

If bender-rspack-config 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 bender-rspack-config part of a known attack campaign?

Yes — bender-rspack-config is associated with the IN-MAL-2026-020119 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 bender-rspack-config across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for bender-rspack-config (version 1.0.0).

Malicious package

bender-rspack-confignpm

Advisory published Sep 15, 2026Updated Sep 17, 2026

bender-rspack-config is a confirmed malicious npm package (MAL-2026-16221) that opens a backdoor for remote access (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bender-rspack-config (npm)

MAL-2026-16221

Immediate action

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

npm uninstall bender-rspack-config

What this malware does

package.json declares a preinstall lifecycle script that runs wget against a hardcoded webhook.site URL, embedding $(whoami), $(pwd), and $(hostname) as query-string parameters. The request fires automatically on npm install, transmitting the installer's username, working-directory path, and hostname to an author-controlled collector at webhook.site/9d385aa8-875e-48b6-938c-6c0f5a0e8319/. The behavior is self-labeled as a dependency-confusion proof of concept, but the shipped code is a functioning identity-beacon regardless of framing.

The OpenSSF Package Analysis project identified 'bender-rspack-config' @ 1.0.0 (npm) as malicious.

It is considered malicious because:

The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

159730c04aeb50c0e832685be81c3f332d8692bf4a9f1a419c7223dbe5059491

3a6997cea54ae81d1addcb41ddac29e94923dfa1042265253c555cb4945ad5b4

Detection & response playbook

Backdoor / remote access

Find it
Search your lockfiles and build artifacts for bender-rspack-config (version 1.0.0).
If you installed it — respond
bender-rspack-config establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If bender-rspack-config 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. bender-rspack-config on npm has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-020119

References

npmjs.com

Credits

Amazon Inspector · finder
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks bender-rspack-config-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

Explore

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