The Nicepage 4.16.0 exploit is not a widespread, apocalyptic threat. However, it is a real vulnerability that should not be ignored. The vast majority of affected sites were patched years ago. If you are a developer or site owner still on this version, your real risk is not just this specific exploit—it is the general neglect of software updates.
If you are investigating security issues related to Nicepage versions from that era, the following common concerns have been raised by users and security plugins: Sensitive Path Exposure nicepage 4.16.0 exploit
Users often search for "exploits" on older software versions to identify unpatched vulnerabilities like Cross-Site Scripting (XSS) SQL Injection The Nicepage 4