{"id":"CVE-2026-91827","published":"2026-09-22T07:16:31.093","lastModified":"2026-09-22T19:41:38.447","description":"The Ninja Forms WordPress plugin 3.15.3 does not prevent user-submitted form field values from being deserialised when an administrator later exports form submissions to CSV, allowing unauthenticated attackers to perform PHP Object Injection; if a suitable POP chain is present via another installed plugin or theme, this can lead to actions such as arbitrary file operations or remote code execution.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-502"],"vendors":[],"products":[],"references":[{"url":"https://wpscan.com/vulnerability/7b279db2-92e0-4122-b5c6-aa12b7b01858/","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The Ninja Forms WordPress plugin has a PHP Object Injection vulnerability when exporting form submissions to CSV, allowing unauthenticated attackers to inject malicious objects that can be executed during deserialization. This creates a high-risk vector for remote code execution if POP chains exist in other plugins or themes.","exploitability":"Exploitation requires an unauthenticated attacker to submit a form with malicious serialized data and then wait for an administrator to export submissions to CSV, making it moderately difficult but possible.","blast_radius":"If exploited, this vulnerability could allow attackers to perform arbitrary file operations or execute remote code on the WordPress server, potentially compromising the entire site and its data.","remediation":"Upgrade to Ninja Forms plugin version 3.15.4 or later to address the PHP Object Injection vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","deserialization","wordpress","csv-export"],"model":"garnet-coder","analyzedAt":"2026-10-18T16:14:58.901Z"}}