CVE-2025-9378
Vayu Blocks <= 1.3.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Block Attributes
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Vayu Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple attributes in the Lottie block in all versions up to, and including, 1.3.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-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 | Sep 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 ≤ 1.3.9
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/a92d53ab-9c59-4c9c-93e5-32dd05246249?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/vayu-blocks/tags/1.3.5/trunk/inc/render/lottie/lottie.php#L102 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3351839/
Credits
Matthew Rollings Jimmy Goucher