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6.4

Cozy Blocks <= 2.2.11 - Malicious Scripts Can Be Injected

CVE-2026-15393 · published 3 months ago
Summary

A security flaw in Cozy Blocks allows authenticated users with contributor access or higher to inject malicious scripts into pages. This can lead to unexpected behavior or security risks when users access those pages. To stay safe, update Cozy Blocks to the latest version or consider replacing it with a more secure alternative.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
cozythemes cozy blocks – page builder for gutenberg editor & fse with 600+ patterns, 58 blocks & templates <= 2.2.11
Original advisory text
Cozy Blocks <= 2.2.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'postMeta.font.size' Block Attribute
The Cozy Blocks – Page Builder for Gutenberg Editor & FSE with 600+ Patterns, 58 Blocks & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'postMeta.font.size' Block Attribute in all versions up to, and including, 2.2.11 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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
6.4 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published28 Jul 2026
Updated4 Nov 2026
First seen28 Jul 2026
Sources
CVE-2026-15393 · NVD
CVE-2026-15393 · MITRE
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