So the tool thinks there is an issue in Cloudflare’s Managed Challege code which intended to be difficult for automated tools like bots to bypass?
If the vendor believes they have found actual malicious code they can submit a vulnerability to Cloudflare’s public VDP. More likely it is a false positive.
The scan is simply notifying that a file has the capability to load dynamic code using the “eval” function. This is not unusual with CF products and can be disregarded safely. Other features from CF, such as bot management, may also use this function.
The scan marks this capability as suspicious because, in the past, malware has taken advantage of this technique, which could lead to infections if the “eval” function is utilized by untrustworthy sources.