Imperva SecureSphere WAF, a security tool for on-premise web applications, has a vulnerability in some versions that allows attackers to bypass filters when inspecting POST data. The bypass payload involves manipulating the POST data to evade detection by the WAF. This vulnerability can be exploited by attackers to craft malicious payloads that may not be detected by the Imperva SecureSphere WAF, potentially leading to successful attacks. Imperva users should update to the latest version to mitigate this vulnerability.
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