CVE-2025-4420CWE-79

Vayu Blocks <= 1.3.1 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via containerWidth Parameter

Medium · published June 3, 2025

CVSS v3.1
6.4
EPSS
0%
Percentile
20.3
In the wild
Unconfirmed
What it 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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00289 · 20.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-06-03T08:21Z
EPSS history
Timeline
  • 03 JUN 08:21Z
    Vayu Blocks <= 1.3.1 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via containerWidth Parameter
    cvelistv5