CVE-2026-11881 Fluent Forms < 6.2.6 - Contributor+ Stored XSS via Date/Time Field
Contributors can inject malicious scripts into form fields, leading to stored XSS that executes in visitors' browsers, including administrators.
- 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-2026-11881?
CVE-2026-11881 is a medium-severity cross-site scripting vulnerability in Unknown Fluent Forms, published on 30 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
The Fluent Forms WordPress plugin before 6.2.6 does not sanitise and escape one of its form field configuration settings before outputting it inside an inline script when a form is rendered, which could allow users with a role as low as Contributor (with delegated form-management permission, and therefore lacking the unfiltered_html capability, e.g. in a multisite setup) to perform Stored Cross-Site Scripting attacks that execute in the browser of any visitor who loads the form, including administrators previewing it.
Weakness: CWE-79
Which versions are affected by CVE-2026-11881?
How do I fix CVE-2026-11881?
No fix has been published for CVE-2026-11881 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-2026-11881 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11881 exists.
Sources
Also known as GHSA-x2rq-2q3v-fw75.