Hi Ken,
Which CVE is mentioned/covered in which on-site version. This particular type of information is best provided by Imperva's support team. So I recommend you to raise a support ticket here.
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Regards,
𝐌𝐢𝐭𝐞𝐬𝐡 𝐌𝐞𝐡𝐭𝐚
Senior Security Consultant
Mumbai
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