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4.4

CVE-2025-15021: Gotham Block Extra Light plugin in WordPress allows malicious scripts to run

CVE-2025-15021 · published 9 months ago
Summary

The Gotham Block Extra Light plugin for WordPress has a security flaw that allows an attacker with administrator access to inject malicious code into pages. This could happen in multi-site or installations where certain security settings are strict. If you use this plugin, update it to the latest version to fix the issue.

Original advisory text
The Gotham Block Extra Light plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.5.0 due to insufficient input sanitization ...
The Gotham Block Extra Light plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.5.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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
4.4 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published14 Jan 2026
Updated4 Nov 2026
First seen7 Mar 2026
Sources
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