CVE-2026-65051: medium-severity vulnerability in Saturday Drive Ninja Forms
Ninja Forms Server-Side Validation Bypass via Client-Controlled Field Metadata Merge in AJAX Submission Handler
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.5%
Ninja Forms WordPress plugin version 3.14.8 contains a client-side enforcement of server-side security vulnerability that allows unauthenticated attackers to bypass all form validation by merging attacker-controlled field metadata over server-loaded form definitions before validation runs. Attackers can craft a malicious AJAX submission overriding field types, removing required flags, and disabling CAPTCHA checks through the nopriv AJAX endpoint to trigger form actions such as email notifications and database storage with unverified, attacker-controlled content.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Affected products
Saturday Drive · Ninja FormsRelated CVEs — Saturday Drive Ninja Forms
In the same product, most dangerous first.
CVE-2021-34647MEDIUMNinja Forms <= 3.5.7 Sensitive Information DisclosureEPSS 1.2%CVE-2021-34648MEDIUMNinja Forms <= 3.5.7 Unprotected REST-API to Email InjectionEPSS 0.7%CVE-2026-65052HIGHNinja Forms Calculation and Payment Total Tampering via Fail-Open get_calc_value in ListSelect and ListRadio FieldsEPSS 0.6%CVE-2026-65048CRITICALNinja Forms Unauthenticated Stored Cross-Site Scripting via Repeatable Fieldset Submission IndexEPSS 0.5%CVE-2023-38393HIGHWordPress Ninja Forms plugin <= 3.6.25 - Subscriber+ Broken Access Control vulnerabilityEPSS 0.5%CVE-2024-26019MEDIUMCVE-2024-26019EPSS 0.5%