Vayu Blocks Plugin up to 1.3.1 on WordPress vayu_blocks_option_panel_callback containerWidth cross site scripting

Summaryinfo

A vulnerability was found in Vayu Blocks Plugin up to 1.3.1 on WordPress. It has been rated as problematic. This impacts the function vayu_blocks_option_panel_callback. This manipulation of the argument containerWidth causes cross site scripting. This vulnerability is handled as CVE-2025-4420. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Vayu Blocks Plugin up to 1.3.1 on WordPress and classified as problematic. Affected by this vulnerability is the function vayu_blocks_option_panel_callback. The manipulation of the argument containerWidth 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 Vayu Blocks – Gutenberg Blocks for WordPress & WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘containerWidth’ parameter in all versions up to, and including, 1.3.1 due to a missing capability check on the vayu_blocks_option_panel_callback() function and insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2025-4420 since 05/08/2025. The exploitation appears to be easy. The attack can be launched remotely. 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.

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-2025-16713). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Vayu Blocks Plugin

Version

• 1.3.0
• 1.3.1

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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