private-next-pagesnpm
Advisory published Updated
private-next-pages is a confirmed malicious npm package (MAL-2026-4193) that steals credentials and exfiltrates sensitive data (malicious version 9.0.5). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in private-next-pages (npm)
What this malware does
package.json declares a postinstall script that uses Node's child_process to execute reconnaissance commands (including whoami) and beacon results out via HTTPS. The script contacts https://api.ipify.org to resolve the installer's public IP, reads process.env, and sends data to an .oast.fun host — the Project Discovery interact.sh out-of-band testing service used as a generic exfiltration sink. On npm install, this fires automatically and leaks host identity, network egress IP, and environment variables to an attacker-controlled collector. There is no legitimate reason for a Next.js page utility package to perform host fingerprinting or beacon to an OOB interaction service at install time.
The OpenSSF Package Analysis project identified 'private-next-pages' @ 9.0.5 (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 private-next-pages (version 9.0.5).
If you installed it — respond
private-next-pages 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 private-next-pages 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 private-next-pages-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.