10web Form Maker Plugin up to 1.15.40 on WordPress sanitize_text_field Matrix cross site scripting

Summaryinfo

A vulnerability has been found in 10web Form Maker Plugin up to 1.15.40 on WordPress and classified as problematic. This vulnerability affects the function sanitize_text_field. This manipulation of the argument Matrix causes cross site scripting. This vulnerability appears as CVE-2026-4388. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in 10web Form Maker Plugin up to 1.15.40 on WordPress. Affected by this vulnerability is the function sanitize_text_field. The manipulation of the argument Matrix with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

The Form Maker by 10Web plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Matrix field (Text Box input type) in form submissions in all versions up to, and including, 1.15.40. This is due to insufficient input sanitization (`sanitize_text_field` strips tags but not quotes) and missing output escaping when rendering submission data in the admin Submissions view. This makes it possible for unauthenticated attackers to inject arbitrary JavaScript through a form submission that executes in the browser of an administrator who views the submission details.

The weakness was presented by Naoya Takahashi. It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-4388 since 03/18/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.15.37 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• 10web

Name

• Form Maker Plugin

Version

• 1.15.0
• 1.15.1
• 1.15.2
• 1.15.3
• 1.15.4
• 1.15.5
• 1.15.6
• 1.15.7
• 1.15.8
• 1.15.9
• 1.15.10
• 1.15.11
• 1.15.12
• 1.15.13
• 1.15.14
• 1.15.15
• 1.15.16
• 1.15.17
• 1.15.18
• 1.15.19
• 1.15.20
• 1.15.21
• 1.15.22
• 1.15.23
• 1.15.24
• 1.15.25
• 1.15.26
• 1.15.27
• 1.15.28
• 1.15.29
• 1.15.30
• 1.15.31
• 1.15.32
• 1.15.33
• 1.15.34
• 1.15.35
• 1.15.36
• 1.15.37
• 1.15.38
• 1.15.39
• 1.15.40

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