CVE-2026-1300
Responsive Header Plugin <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings Parameters
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
The Responsive Header plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple plugin settings parameters in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access 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.
| CWE | CWE-79 |
| Vendor | mehtevas |
| Product | responsive header plugin |
| Published | Jan 24, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
mehtevas / Responsive Header Plugin
0 ≤ 1.0
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/30821418-48c0-4bc6-8bf1-f558671bff24?source=cve downloads.wordpress.org: https://downloads.wordpress.org/plugin/responsive-header.1.0.zip wordpress.org: https://wordpress.org/plugins/responsive-header/ plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/responsive-header/trunk/rhp-settings.php#L103 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/responsive-header/tags/1.0/rhp-settings.php#L103
Credits
Bhumividh Treloges