CVE-2025-4420
Vayu Blocks <= 1.3.1 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via containerWidth Parameter
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | themehunk |
| Product | vayu blocks – website builder for the block editor |
| Published | Jun 3, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
themehunk / Vayu Blocks – Website Builder for the Block Editor
0 ≤ 1.3.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/db01bc0a-4508-4fb5-941d-3f1a52528e2b?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/vayu-blocks/trunk/inc/admin-api.php#L6 wordpress.org: https://wordpress.org/plugins/vayu-blocks/#developers plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3303594/
Credits
Cheng Liu