CVE-2026-95816 Smart Forms <= 2.6.104 - Unauthenticated Stored Cross-Site Scripting via 'formString' Parameter
Unauthenticated attackers can inject arbitrary scripts via the formString parameter in Smart Forms, leading to stored XSS and potential account takeover.
- 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-2026-95816?
CVE-2026-95816 is a high-severity cross-site scripting vulnerability in edgarrojas Smart Forms – when you need more than just a contact form, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Smart Forms – when you need more than just a contact form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'formString' parameter in all versions up to, and including, 2.6.104 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. The nonce check protecting the rednao_smart_forms_save_form_values AJAX handler is only enforced when the smart_forms_block_anonymous_submissions option is enabled, meaning default installations require no authentication or nonce verification whatsoever to submit and store malicious payloads.
Weakness: CWE-79
Which versions are affected by CVE-2026-95816?
How do I fix CVE-2026-95816?
No fix has been published for CVE-2026-95816 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-2026-95816 being exploited?
There is no known exploitation of CVE-2026-95816 in the wild and no public exploit code.
Sources
Also known as GHSA-wvww-4x5h-8gg3.