Which versions of yuji-baileys are malicious?

Every published version of yuji-baileys on npm is considered malicious. Remove the package entirely.

How do I remediate yuji-baileys if I installed it?

Remove yuji-baileys 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 yuji-baileys — how do I know if it already compromised me?

If yuji-baileys was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is yuji-baileys part of a known attack campaign?

Yes — yuji-baileys is associated with the GHSA-r56q-r5p2-x734 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 yuji-baileys across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for yuji-baileys (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging yuji-baileys across your stack and pipelines.

Malicious package

yuji-baileysnpm

Malicious code in yuji-baileys (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-1135

Immediate action

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

npm uninstall yuji-baileys

What this malware does

The package yuji-baileys was found to contain malicious code.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

3303459ce999de4740a84cadfa5aa3bccefa3d5fb9520a67622b617efa5e7d1a

5b7ba59a8cca0d955d0763a6cfa26acceb20506ce8f3fa0faef31d0cf59cf7c5

Detection & response playbook

Malicious package

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for yuji-baileys (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging yuji-baileys across your stack and pipelines.
If you installed it — respond
Remove yuji-baileys 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 yuji-baileys was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks yuji-baileys before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. yuji-baileys on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-r56q-r5p2-x734

References

github.com

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks yuji-baileys-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