CVE-2026-15273
Automatic.css 4.0.0 - Unauthenticated Stored Cross-Site Scripting via REQUEST_URI
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Automatic.css plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REQUEST_URI in all version 4.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that will execute whenever an administrator accesses the Activity Log settings page.
| CWE | CWE-79 |
| Vendor | automatic.css |
| Product | automatic.css |
| Published | Sep 26, 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
Automatic.css / Automatic.css
4.0.0
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/07d697c5-1c15-4d3a-8637-cc4fd408f209?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/UI/Settings_Page/Activity_Log.php#L90 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/Helpers/Logger.php#L187 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/Plugin.php#L175 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/automaticcss-plugin/trunk/classes/Lib/WideEvents/Formatter/JsonFormatter.php#L25 automaticcss.com: https://automaticcss.com/changelogs/
Credits
Nguyen Ngoc Duc (duc193)