CVE-2026-87870 Cross-site scripting in Ninja Forms - Scheduled Exports
Authenticated attackers can inject arbitrary scripts via REST API parameters in the Ninja Forms Scheduled Exports plugin, leading to stored XSS.
- 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-2026-87870?
CVE-2026-87870 is a medium-severity cross-site scripting vulnerability in Saturday Drive Ninja Forms - Scheduled Exports, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Ninja Forms - Scheduled Exports plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REST API Parameters (interval, format, emailTo) in all versions up to, and including, 3.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level privileges and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The REST endpoint is registered without a permission_callback and only validates a nonce without checking user capabilities.
Weakness: CWE-79
Which versions are affected by CVE-2026-87870?
How do I fix CVE-2026-87870?
No fix has been published for CVE-2026-87870 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-2026-87870 being exploited?
There is no known exploitation of CVE-2026-87870 in the wild and no public exploit code.
Sources
Also known as GHSA-vxhj-7whr-2q55.