CVE-2026-15161 Ninja Forms - Excel Export <= 3.3.6 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'filter' Parameter
Authenticated attackers can inject arbitrary scripts via the filter parameter, leading to code execution or account takeover when admins view the export screen.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15161?
CVE-2026-15161 is a medium-severity cross-site scripting vulnerability in SaturdayDrive Ninja Forms - Excel Export, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Ninja Forms - Excel Export plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.3.6. This is due to the save_filter() AJAX handler storing the raw $_POST['filter'] array into a WordPress option via update_option() without any capability check, nonce verification, or input sanitization, combined with the get_filter_row() method on the admin Excel Export screen concatenating the stored filter values (field_key, condition, value) directly into HTML attributes without esc_attr(). This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-15161?
How do I fix CVE-2026-15161?
No fix has been published for CVE-2026-15161 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-15161 being exploited?
There is no known exploitation of CVE-2026-15161 in the wild and no public exploit code.
Sources
Also known as GHSA-wwwp-3vpq-g9xq.