CVE-2026-65048 Ninja Forms Unauthenticated Stored Cross-Site Scripting via Repeatable Fieldset Submission Index
Unauthenticated attackers can inject scripts via form submissions that execute in admin browsers, leading to account takeover and privilege escalation.
- 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-2026-65048?
CVE-2026-65048 is a critical cross-site scripting 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 for WordPress versions 3.10.4 through 3.14.9 contains an unauthenticated stored cross-site scripting vulnerability in the Repeatable Fieldset feature where parseSubmissionIndex() accepts arbitrary strings as submission indexes without numeric validation, and admin_form_element() interpolates the index directly into HTML without escaping. An unauthenticated attacker can submit a public form with a crafted repeater child key containing malicious script payloads, which execute in an administrator's browser when viewing submissions in the WordPress admin panel, enabling session-cookie theft, creation of administrator accounts, installation of malicious plugins, and arbitrary modification of site content.
Weakness: CWE-79
Which versions are affected by CVE-2026-65048?
How do I fix CVE-2026-65048?
No fix has been published for CVE-2026-65048 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-2026-65048 being exploited?
There is no known exploitation of CVE-2026-65048 in the wild and no public exploit code.
Sources
Also known as GHSA-895j-583x-29ww.