CVE-2023-5566
Simple Shortcodes <= 1.0.20 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Simple Shortcodes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via shortcodes in versions up to, and including, 1.0.20 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
| CWE | CWE-79 |
| Vendor | simplethemes |
| Product | simple shortcodes |
| Published | Oct 30, 2023 |
| 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
simplethemes / Simple Shortcodes
0 ≤ 1.0.20
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/a153d6b2-e3fd-42db-90ba-d899a07d60c1?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/smpl-shortcodes/tags/1.0.20/includes/shortcodes.php#L386 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/smpl-shortcodes/tags/1.0.20/includes/shortcodes.php#L292 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/smpl-shortcodes/tags/1.0.20/includes/shortcodes.php#L257
Credits
István Márton