faridsaniee OPEN-BRAIN Plugin up to 0.5.0 on WordPress Setting sanitize_text_field API key cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in faridsaniee OPEN-BRAIN Plugin up to 0.5.0 on WordPress. This affects the function sanitize_text_field of the component Setting Handler. Executing a manipulation of the argument API key can lead to cross site scripting. The identification of this vulnerability is CVE-2026-3995. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in faridsaniee OPEN-BRAIN Plugin up to 0.5.0 on WordPress. This vulnerability affects the function sanitize_text_field of the component Setting Handler. The manipulation of the argument API key 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. CVE summarizes:

The OPEN-BRAIN plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'API Key' settings field in all versions up to, and including, 0.5.0. This is due to insufficient input sanitization and output escaping. The plugin uses sanitize_text_field() which strips HTML tags but does not encode double quotes or other HTML-special characters needed for safe attribute context output. The API key value is saved via update_option() and later output into an HTML input element's value attribute without esc_attr() escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts via attribute breakout payloads (e.g., double quotes followed by event handlers) that execute whenever a user accesses the plugin settings page.

The weakness was shared by Muhammad Nur Ibnu Hubab. The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-3995 since 03/11/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-23213). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• WordPress Plugin

Vendor

• faridsaniee

Name

• OPEN-BRAIN Plugin

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5.0

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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