What’s Vulnerable › Vulnerabilities

CVE-2026-15292: Sudoku Shortcode <= 1.0.0 - Authenticated (Contributor+) Cross-Site Scripting via 'background' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-07-10
• Weakness: CWE-79

Description

The Sudoku Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'background' parameter in the 'sudoku-sc' shortcode in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output 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.

Affected products

• tibouille Sudoku Shortcode: through 1.0.0

References

• https://plugins.trac.wordpress.org/browser/sudoku-shortcode/tags/1.0.0/sudoku-shortcode.php#L63
• https://plugins.trac.wordpress.org/browser/sudoku-shortcode/tags/1.0.0/sudoku-shortcode.php#L73
• https://plugins.trac.wordpress.org/browser/sudoku-shortcode/trunk/sudoku-shortcode.php#L63
• https://plugins.trac.wordpress.org/browser/sudoku-shortcode/trunk/sudoku-shortcode.php#L73
• https://www.wordfence.com/threat-intel/vulnerabilities/id/99e4b38c-f81d-4578-a623-ea62495e934d?source=cve

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