CVE-2026-11881: Fluent Forms < 6.2.6 - Contributor+ Stored XSS via Date/Time Field
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 unfilteredhtml 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Fluent Forms (WordPress plugin)to a version that resolves this vulnerability.Fixed in 6.2.6
Event History
Frequently Asked Questions
What is the severity of CVE-2026-11881?
CVE-2026-11881 has a medium severity rating of 6.1.
What type of vulnerability is CVE-2026-11881?
CVE-2026-11881 is a stored cross-site scripting (XSS) vulnerability.
How do I fix CVE-2026-11881?
To fix CVE-2026-11881, update the Fluent Forms plugin to version 6.2.6 or later.
Who is affected by CVE-2026-11881?
CVE-2026-11881 affects users with at least Contributor role who have delegated form-management permissions.
When was CVE-2026-11881 published?
CVE-2026-11881 was published on July 30, 2026.