What is CVE-2025-4420?

CVE-2025-4420 is a medium-severity vulnerability in Themehunk Vayu Blocks – Website Builder For The Block Editor, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-06-03.

How severe is CVE-2025-4420?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Themehunk Vayu Blocks – Website Builder For The Block Editor

CVE-2025-4420

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 che…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (42.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Themehunk Vayu Blocks – Website Builder For The Block Editor — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-4420?: CVE-2025-4420 is a medium-severity vulnerability in Themehunk Vayu Blocks – Website Builder For The Block Editor, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-06-03.
How severe is CVE-2025-4420?: Medium severity. CVSS v3 base score is 6.4 out of 10.