Stored Cross-Site Scripting in Vayu Blocks Plugin for WordPress
CVE-2025-4420

6.4MEDIUM

What is CVE-2025-4420?

The Vayu Blocks plugin for WordPress is exposed to a Stored Cross-Site Scripting vulnerability through the 'containerWidth' parameter. This flaw arises from inadequate capability checks within the vayu_blocks_option_panel_callback() function, combined with insufficient input sanitization and output escaping mechanisms. As a result, authenticated users with Subscriber-level access or higher may exploit this vulnerability to insert malicious script into pages, potentially executing harmful code whenever a user visits the compromised page.

Affected Version(s)

Vayu Blocks – Gutenberg Blocks for WordPress & WooCommerce * <= 1.3.1

References

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Cheng Liu
.
CVE-2025-4420 : Stored Cross-Site Scripting in Vayu Blocks Plugin for WordPress