RPB Chessboard <= 8.1.2 - Unauthenticated Stored Cross-Site Scripting via Comment Content
| CVE | CVE-2026-13042 |
|---|---|
| CVSS | 7.2 (High) |
| Publicly Published | July 15, 2026 |
| Last Updated | July 16, 2026 |
| Researcher |
theviper17y
|
Description
The RPB Chessboard plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 8.1.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress's save-time kses sanitization does not mitigate this issue because the crafted payload uses only kses-allowed tags and attributes (such as an <a> element with title and href), and the dangerous attribute-breaking HTML is synthesized entirely at render time by the plugin's own comment_text filter.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for RPB Chessboard
| Software Type | Plugin |
|---|---|
| Software Slug | rpb-chessboard (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 8.1.3, or a newer patched version |
| Affected Version |
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| Patched Version |
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