Stored Cross-Site Scripting Vulnerability in Fluent Forms WordPress Plugin
CVE-2026-11881

6.1MEDIUM

Key Information:

Vendor

WordPress
Status
Fluent Forms
Vendor
CVE Published:
30 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11881?

The Fluent Forms WordPress plugin prior to version 6.2.6 contains a vulnerability that fails to properly sanitize and escape a specific form field configuration setting. When a form is rendered, this oversight enables users with low-level roles, such as Contributor with specific permissions, to potentially execute stored Cross-Site Scripting (XSS) attacks. Such attacks can compromise the browser of any visitor, including site administrators who may preview the form, thus posing a significant security risk to WordPress websites.

Affected Version(s)

Fluent Forms 0 < 6.2.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-11881 - Proof of Concept

References

https://wpscan.com/vulnerability/3ccc3b34-44ed-4489-86e5-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muni Nitish Kumar Yaddala
WPScan
.