Stored Cross-Site Scripting Vulnerability in Vayu Blocks Plugin for WordPress
CVE-2025-9378

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Vayu Blocks – Website Builder For The Block Editor
Vendor
CVE Published:
3 September 2025

What is CVE-2025-9378?

The Vayu Blocks plugin for WordPress is susceptible to Stored Cross-Site Scripting due to flawed input sanitization and output escaping in the Lottie block. This vulnerability permits authenticated attackers with Contributor-level access and above to inject malicious web scripts into the pages. Consequently, these scripts can execute whenever a user visits an infected page, posing a significant risk to site security and user data integrity. It's crucial for administrators to update to the latest version or implement immediate security measures to mitigate this risk.

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Deploy the Patch

Affected Version(s)

Vayu Blocks – Website Builder for the Block Editor * <= 1.3.9

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/vayu-blocks/ta...
https://plugins.trac.wordpress.org/changeset/3351839/

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Matthew Rollings
Jimmy Goucher
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