CVE-2026-8886
hk_shortcode <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' Shortcode Attribute
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The hk_shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title-plane' shortcode in versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes in the huankong_post_short_title_plane() function, where the 'title' attribute is concatenated directly into HTML output without any escaping. 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 | huankong |
| Product | hk_shortcode |
| Published | May 27, 2026 |
| Last Updated | May 27, 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
huankong / hk_shortcode
0 ≤ 1.0
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/ed1a7872-e268-460d-82f1-b047335a9977?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/hk-shortcode/tags/1.0/function/shortcode.php#L8 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/hk-shortcode/tags/1.0/function/shortcode.php#L6
Credits
zakaria