CVE-2025-13904: WPGancio <= 1.12 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

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: 2025-12-12 · updated 2026-10-07
Weakness: CWE-79

Description

The WPGancio plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'gancio-event' shortcode in all versions up to, and including, 1.12 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.

Affected products

lesion WPGancio: through 1.12

References

https://plugins.trac.wordpress.org/browser/wpgancio/tags/1.12/wc.php#L33
https://plugins.trac.wordpress.org/browser/wpgancio/trunk/wc.php#L33
https://www.wordfence.com/threat-intel/vulnerabilities/id/593fefe1-8813-440b-b8c7-fbfd5b71a737?source=cve

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