collected-forms-embed-jsnpm
Advisory published Updated
collected-forms-embed-js is a confirmed malicious npm package (MAL-2026-4175) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1, 1.0.5…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in collected-forms-embed-js (npm)
What this malware does
The package.json declares a postinstall lifecycle hook that performs reconnaissance and exfiltration on every install. The script invokes child_process to capture host identity (whoami) and reads process.env, queries https://api.ipify.org to obtain the installer's public IP, and POSTs the collected data to a subdomain under.oast.fun (an out-of-band application security testing / interaction host commonly used as exfiltration C2). Any developer or CI system running npm install for this package will leak host identity, environment variables, and network identifiers to the attacker-controlled callback. There is no legitimate reason for a forms-embedding library to fingerprint hosts and beacon to an OAST domain at install time.
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.
The OpenSSF Package Analysis project identified 'collected-forms-embed-js' @ 1.0.1 (npm) as malicious.
It is considered malicious because:
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The package communicates with a domain associated with malicious activity.
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The package executes one or more commands associated with malicious behavior.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for collected-forms-embed-js (4 malicious versions).
If you installed it — respond
collected-forms-embed-js 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 collected-forms-embed-js 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
- OpenSSF: Package Analysis · finder
Detect & block this
O3 blocks collected-forms-embed-js-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.