Insecure Direct Object Reference in Ninja Forms - Excel Export Plugin for WordPress
CVE-2026-15159

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Ninja Forms - Excel Export
Vendor
CVE Published:
17 July 2026

What is CVE-2026-15159?

The Ninja Forms - Excel Export plugin for WordPress is vulnerable to an Insecure Direct Object Reference due to insufficient validation of the 'spreadsheet_export_form_id' parameter. Authenticated users with subscriber-level access and higher can exploit this flaw to gain unauthorized access to any Ninja Forms forms. This allows attackers to enumerate form IDs and download sensitive submission data, including personally identifiable information (PII) like names, email addresses, and phone numbers in a downloadable XLSX format.

Affected Version(s)

Ninja Forms - Excel Export 0 <= 3.3.6

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/ninja-forms-ex...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Chu Thao Mai
.