Ninja Forms WordPress Plugin Under Investigation for Critical Vulnerabilities
An early warning has been issued regarding two critical vulnerabilities in the Ninja Forms plugin for WordPress. Versions 3.10.4 through 3.14.9 are reportedly affected.
What happened
The Ninja Forms plugin for WordPress is under investigation for containing an unauthenticated stored cross-site scripting vulnerability (CVE-2026-65048) in versions 3.10.4 through 3.14.9. This vulnerability allows an unauthenticated attacker to execute malicious scripts in an administrator's browser when viewing form submissions, potentially leading to session-cookie theft, creation of administrator accounts, installation of malicious plugins, and arbitrary modification of site content.
Additionally, Ninja Forms plugin version 3.14.8 and prior for WordPress Multisite is reportedly affected by an incorrect authorization vulnerability (CVE-2026-65049). This vulnerability 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.
To mitigate the risk of these vulnerabilities, it is recommended to upgrade the Ninja Forms plugin to version 3.15.0 or later. For more detailed information, please consult the primary sources linked in the threat data section.
How 0Day mitigates this
ninja forms plugin is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.