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CVE-2026-91827

HIGH 7.5 CVSS 3.1
Published
September 22, 2026
Last modified
September 22, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-502
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Affected WordPress components

  • Ninja Forms – The Contact Form Builder That Grows With You Plugin · ninja-forms
    Confirmed match Active
    From 3.15.3 (including) to 3.15.4 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Ninja Forms — From 3.15.3 (including) to 3.15.4 (excluding)

References

  • wpscan.com https://wpscan.com/vulnerability/7b279db2-92e0-4122-b5c6-aa12b7b01858/
  • nvd.nist.gov Official NVD record