CVE-2026-1809
HTML Shortcodes <= 1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The HTML Tag Shortcodes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
| CWE | CWE-79 |
| Vendor | jhoylman |
| Product | html shortcodes |
| Published | Feb 11, 2026 |
| Last Updated | Apr 8, 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
jhoylman / HTML Shortcodes
0 ≤ 1.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/846ccac2-ad56-4128-836d-2807c700c3fc?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/html-shortcodes/tags/1.1/html_shortcode.php#L88 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/html-shortcodes/tags/1.1/html_shortcode.php#L100 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/html-shortcodes/trunk/html_shortcode.php#L88 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/html-shortcodes/trunk/html_shortcode.php#L100
Credits
zakaria