CVE-2026-18323 Forminator Forms <= 1.57.0.2 - Unauthenticated Stored Cross-Site Scripting via Radio Field (Save and Continue Draft)
Unauthenticated attackers can inject arbitrary scripts via radio fields in Forminator Forms, leading to code execution when admins view submissions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18323?
CVE-2026-18323 is a high-severity cross-site scripting vulnerability in wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Radio Field (Save and Continue Draft) in all versions up to, and including, 1.57.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable because the Save-and-Continue draft submission AJAX endpoint is registered as nopriv, allowing unauthenticated attackers to bypass radio field option-membership validation and persist a crafted payload that, when rendered on the Submissions admin page, is auto-executed via the bundled Inputmask library's data-attribute callback binding.
Weakness: CWE-79
Which versions are affected by CVE-2026-18323?
How do I fix CVE-2026-18323?
No fix has been published for CVE-2026-18323 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-2026-18323 being exploited?
There is no known exploitation of CVE-2026-18323 in the wild and no public exploit code.
Sources
Also known as GHSA-mh72-7gfv-9x86.