Imperva Web Application Firewall has a flaw that allows attackers to bypass WAF rules. This vulnerability affects the overall security of web applications protected by Imperva WAF. Attackers can exploit this flaw to circumvent the protection mechanisms and potentially launch attacks against the web applications. Imperva users should be aware of this issue and take necessary precautions to mitigate the risk. For more technical details, vulnerability analysis, and mitigation recommendations, refer to the official Imperva security advisory.