public-site-cms-uinpm
Advisory published Updated
public-site-cms-ui is a confirmed malicious npm package (MAL-2026-483) that executes malicious code on install. Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in public-site-cms-ui (npm)
What this malware does
The package public-site-cms-ui was found to contain malicious code.
Malicious versions
Every published version of this package is considered malicious — remove it entirely.
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for public-site-cms-ui (all published versions).
If you installed it — respond
Remove public-site-cms-ui 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 public-site-cms-ui 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
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks public-site-cms-ui-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.