Ninja Forms - Excel Export <= 3.3.6 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Data Disclosure via 'spreadsheet_export_form_id' Parameter

4.3
Authorization Bypass Through User-Controlled Key
CVE CVE-2026-15159
CVSS 4.3 (Medium)
Publicly Published July 16, 2026
Last Updated July 17, 2026
Researcher Chu Thao Mai

Description

The Ninja Forms - Excel Export plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.3.6 via the 'spreadsheet_export_form_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to enumerate any Ninja Forms form ID and download all stored submission data — including names, email addresses, phone numbers, physical addresses, and any other PII collected by site forms — as a downloadable XLSX file.

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Vulnerability Details for Ninja Forms - Excel Export

Software Type Plugin
Software Slug ninja-forms-excel-export
Patched? Yes
Remediation Update to version 3.3.7, or a newer patched version
Affected Version
  • <= 3.3.6
Patched Version
  • 3.3.7

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