CVE-2026-3850 Cross-site scripting in Divi
Authenticated attackers can inject arbitrary JavaScript via the contact form redirect URL, leading to script execution when users submit the form.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3850?
CVE-2026-3850 is a medium-severity cross-site scripting vulnerability in Elegant Themes Divi, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Divi theme for WordPress is vulnerable to Stored Cross-Site Scripting via the `redirect_url` parameter of the `et_pb_contact_form` shortcode in all versions up to, and including, 4.27.6. This is due to the `redirect_url` attribute being sanitized with `esc_attr()` instead of `esc_url()` before being rendered into the `data-redirect_url` HTML data attribute. Additionally, `redirect_url` is absent from the hardcoded `$url_options` array in `class-et-builder-element.php`, so it does not receive `esc_url_raw()` sanitization during shortcode parsing. After a successful form submission, client-side JavaScript reads this data attribute and passes it directly to `window.location.href`, executing arbitrary JavaScript from a `javascript:` URI. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that execute whenever a user submits the contact form.
Weakness: CWE-79
Which versions are affected by CVE-2026-3850?
How do I fix CVE-2026-3850?
No fix has been published for CVE-2026-3850 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-2026-3850 being exploited?
There is no known exploitation of CVE-2026-3850 in the wild and no public exploit code.
Sources
Also known as GHSA-q2q3-cp6p-r7mv.