Medium severity · published Jul 17, 2026
CVE-2026-15159
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
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NF
Ninja Forms - Excel Export · SaturdayDrive
through 3.3.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15159
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15159
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/ninja-forms-excel-export/trunk/ninja-forms-excel-export.php#L187
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/783ccf21-db16-4aac-9a3c-992b3aac5526?source=cve
More from Ninja Forms - Excel Export
6.4
CVE-2026-15161
Ninja Forms - Excel Export <= 3.3.6 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'filter' Parameter
4.3
CVE-2026-15160
Ninja Forms - Excel Export <= 3.3.6 - Missing Authorization to Authenticated (Subscriber+) XLS Write via Path Traversal