Nicepage 4160 Exploit: Upd

Examine access logs for suspicious POSTs to Nicepage endpoints and requests to uploaded files:

Scan for known webshell signatures (use ClamAV, rkhunter, or webshell scanners).

Check for added cronjobs, new system users, or modified site configuration files.

If available, review application logs for failed/accepted uploads and authentication events.

Nicepage (CMS/website builder) had a reported remote code execution (RCE) / file upload vulnerability affecting versions around 4.1.60 (reference string: "nicepage 4160") that allows unauthenticated attackers to upload or execute arbitrary files via insufficient input validation on an upload/handler endpoint. This report summarizes impact, technical details, detection, remediation, and recommended mitigations.

The "upd" script hides in the database, not just the filesystem. Run this SQL query via phpMyAdmin: nicepage 4160 exploit upd

DELETE FROM wp_options WHERE option_name LIKE '%nicepage_updater%';
DELETE FROM wp_postmeta WHERE meta_key = '_nicepage_cron';

(Note: do not run exploits; this is for defensive understanding only.) Examine access logs for suspicious POSTs to Nicepage