{"id":"CVE-2026-91827","aliases":["EUVD-2026-84283","GHSA-jvgp-rj42-qjww"],"status":"published","title":"Ninja Forms 3.15.3 - Unauthenticated PHP Object Injection via CSV Export","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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00348,"percentile":0.28763,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-09-22T06:58:01Z","modified":"2026-09-22T19:41:38Z","products":[{"vendor":"unknown","product":"ninja forms"}],"references":[{"url":"https://wpscan.com/vulnerability/7b279db2-92e0-4122-b5c6-aa12b7b01858/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91827"},{"url":"https://wpscan.com/vulnerability/7b279db2-92e0-4122-b5c6-aa12b7b01858"},{"url":"https://github.com/advisories/GHSA-jvgp-rj42-qjww"}],"sources":{"cve":[{"id":"CVE-2026-91827","title":"Ninja Forms 3.15.3 - Unauthenticated PHP Object Injection via CSV Export","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.","status":"published","published":"2026-09-22T06:58:01.461Z","modified":"2026-09-22T10:05:56.864Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:19:53.115938Z"}],"euvd":[{"id":"EUVD-2026-84283","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.","status":"published","published":"2026-09-22T06:58:01Z","modified":"2026-09-22T10:05:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:03.79222Z"}],"ghsa":[{"id":"GHSA-jvgp-rj42-qjww","title":"The Ninja Forms WordPress plugin 3.15.3 does not prevent user-submitted form field values from...","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.","status":"published","published":"2026-09-22T09:31:11Z","modified":"2026-09-22T12:30:25Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:12:16.582397Z"}],"nvd":[{"id":"CVE-2026-91827","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.","status":"published","published":"2026-09-22T07:16:31.093Z","modified":"2026-09-22T19:41:38.447Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:50.368368Z"}]}}