CVE-2025-3421 Everest Forms <= 3.1.1 - Reflected Cross-Site Scripting
Unauthenticated attackers can inject arbitrary web scripts via the form_id parameter, requiring user interaction to execute.
- 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-2025-3421?
CVE-2025-3421 is a medium-severity cross-site scripting vulnerability in wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder, published on 11 Apr 2025. 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
The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'form_id' parameter in all versions up to, and including, 3.1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Weakness: CWE-79
Which versions are affected by CVE-2025-3421?
It affects 1 product.
Products include Wpeverest Everest Forms.
How do I fix CVE-2025-3421?
No fix has been published for CVE-2025-3421 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-2025-3421 being exploited?
There is no known exploitation of CVE-2025-3421 in the wild and no public exploit code.
Other vulnerabilities in wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder
- CVE-2025-3439 Deserialization in Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder
- CVE-2025-1128 Everest Forms <= 3.0.9.4 - Unauthenticated Arbitrary File Upload, Read, and Deletion
- CVE-2019-13575 SQL injection in n/a
- CVE-2025-5927 Everest Forms (Pro) <= 1.9.4 - Unauthenticated Path Traversal to Arbitrary File Deletion
- CVE-2024-1812 Everest Forms <= 2.0.7 - Unauthenticated Server-Side Request Forgery via font_url
Sources
Also known as GHSA-h573-4qjm-8775.