CVE-2026-2231 HIGH

CVE-2026-2231: Fluent Booking <= 2.0.01 - Unauthenticated Stored Cross-Site Scripting via Multiple Parameters

Vendor Techjewel
Product Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution
Weakness CWE-79 · XSS
Published March 26, 2026
Last update April 8, 2026

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The Fluent Booking plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters in all versions up to, and including, 2.0.01 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Explanation of Vulnerability in Simple Terms

02Summary

Fluent Booking versions 2.0.01 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into the application. The vulnerability can be exploited remotely without authentication or user interaction. Affected sites may serve malicious content to visitors, potentially compromising user data or session tokens.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in visitors' browsers and steals session data or credentials.

Potential impact on your site

04Site Impact

Visitors may have their sessions hijacked or credentials stolen; site reputation and user trust at risk.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

March 26, 2026 CVE published
April 8, 2026 Record updated

Related vulnerabilities

08Related CVE