Vulnerability 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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://wordpress.org/plugins/ninja-forms/
- https://wordpress.org/plugins/ninja-forms/changelog/
- https://www.vulncheck.com/advisories/ninja-forms-cross-site-network-wide-data-de
FAQ
What is CVE-2026-65049?
CVE-2026-65049 is a vulnerability with a CVSS score of 9.3 (CRITICAL). 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 ...
How severe is CVE-2026-65049?
CVE-2026-65049 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-65049?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.