CVE-2021-36827 MEDIUM

CVE-2021-36827: WordPress Ninja Forms Contact Form plugin <= 3.6.9 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

Vendor Saturday Drive
Product Ninja Forms Contact Form (WordPress plugin)
Weakness CWE-79 · XSS
Published June 16, 2022
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Saturday Drive's Ninja Forms Contact Form plugin <= 3.6.9 at WordPress via "label".

Explanation of Vulnerability in Simple Terms

02Summary

Ninja Forms Contact Form versions up to 3.6.9 contain a stored cross-site scripting (XSS) vulnerability in form field handling. An authenticated admin with high privileges can inject malicious scripts into form configurations. When other users view or interact with the affected form, the scripts execute in their browsers, potentially compromising their sessions or data.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts into form fields that execute when other users view the form.

Potential impact on your site

04Site Impact

Malicious admins can compromise visitor sessions or steal data through injected scripts in contact forms.

Conditions required to exploit

05Prerequisites

Attacker must have admin-level access to the WordPress site and the victim must view the affected form.

Key dates

06Disclosure timeline

June 16, 2022 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

CVE-2026-15665 Fluent Support <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'redirect-to' Shortcode Attribute CVE-2026-15755 Open User Map <= 1.4.45 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes CVE-2026-65534 WordPress Custom links in Elementor Image Carousel plugin <= 1.1.1 - Cross Site Scripting (XSS) vulnerability CVE-2026-13425 Database for CF7 <= 1.2.6 - Unauthenticated Stored Cross-Site Scripting via Array Form Field Values CVE-2026-65538 WordPress Machete plugin <= 5.2 - Cross Site Scripting (XSS) vulnerability