CVE-2025-4420mediumCWE-79

CVE-2025-4420: medium-severity vulnerability in themehunk Vayu Blocks – Website Builder for…

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

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.4epss 0.3%
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.
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
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In the same product, most dangerous first.

CVE-2024-10124CRITICALVayu Blocks – Gutenberg Blocks for WordPress & WooCommerce <= 1.1.1 - Missing Authorization to Unauthenticated Arbitrary Plugin Installation/ActivationEPSS 32.7%CVE-2025-9378MEDIUMVayu Blocks <= 1.3.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Block AttributesEPSS 0.2%