CVE-2026-11881: 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 i
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-11881
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-118810.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-11881 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Fluent Forms WordPress
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-17571: The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plu…nvd · 2026-08-01
- mediumCVE-2026-17567: The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plu…nvd · 2026-07-31
- highCVE-2026-16655: The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plu…nvd · 2026-07-29
- highCVE-2026-15962: The Fluent Forms Pro Add On Pack plugin for WordPress is vulnerable to PHP Object Injection in…nvd · 2026-07-26
- mediumCVE-2026-5069: The Fluent Forms plugin for WordPress is vulnerable to incorrect authorization via the 'subscri…nvd · 2026-07-10
- lowCVE-2026-11578: The Fluent Forms WordPress plugin before 6.2.5 does not properly restrict the deletion of form…nvd · 2026-07-02
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