CVE-2026-65049 Ninja Forms Cross-Site Network-Wide Data Deletion on WordPress Multisite via nf_delete_all_data AJAX Action

High 8.4 Published Updated

A subsite administrator can delete all Ninja Forms data across the entire WordPress multisite network due to improper authorization checks.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-65049?

CVE-2026-65049 is a high-severity missing authorization vulnerability in Saturday Drive Ninja Forms, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Ninja Forms plugin version 3.14.8 and prior for WordPress Multisite contains an incorrect authorization vulnerability that allows a subsite Administrator to trigger network-wide deletion of all Ninja Forms data by exploiting a site-scoped capability check combined with unsafe multisite migration defaults. Attackers can send a crafted POST request to the admin-ajax.php endpoint with the nf_delete_all_data action and a per-site nonce to invoke migration routines that unconditionally iterate all blogs via switch_to_blog(), dropping all nf3_* tables and clearing options and transients across every subsite in the network without requiring super-admin or network-admin privileges.

Weakness: CWE-863

Which versions are affected by CVE-2026-65049?

How do I fix CVE-2026-65049?

No fix has been published for CVE-2026-65049 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-65049 being exploited?

There is no known exploitation of CVE-2026-65049 in the wild and no public exploit code.

Sources

Also known as GHSA-8235-3h67-fv4q.

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