Which versions of nicegui are malicious?

The following npm versions of nicegui are flagged malicious: 0.1.4. Treat any of these as compromised.

How do I remediate nicegui if I installed it?

nicegui is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed nicegui — how do I know if it already compromised me?

If nicegui 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.

How do I find nicegui across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for nicegui (version 0.1.4).

Malicious package

niceguinpm

Advisory published Apr 29, 2026Updated Apr 30, 2026

nicegui is a confirmed malicious npm package (MAL-2026-3180) that steals credentials and exfiltrates sensitive data (malicious version 0.1.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nicegui (npm)

MAL-2026-3180

Immediate action

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

npm uninstall nicegui

What this malware does

Malicious npm package published by threat actor "ryanmccollum1" typosquatting the popular Python NiceGUI framework. Part of the same supply chain attack campaign as redeem-onchain-sdk, which collects SSH keys, AWS credentials, .npmrc tokens, Docker auth, Chrome saved logins, .env files, and git history, exfiltrating over a raw TCP socket to an AWS-hosted C2. Published by threat actor "ryanmccollum1" as part of the same campaign as redeem-onchain-sdk.

The package nicegui was found to contain malicious code.

Malicious versions

1 flagged

0.1.4

Indicators of compromise (SHA-256)

bdc02f08ae75f2010d8b5df4b7b4f083b25f30e8d4c8b8aee4c5c1f988e416ed

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for nicegui (version 0.1.4).
If you installed it — respond
nicegui is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If nicegui 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. nicegui on npm has been identified as a malicious package (version 0.1.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

safedep.io

Credits

Amazon Inspector · finder
SafeDep · finder

Detect & block this

O3 blocks nicegui-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database