What’s Vulnerable › Vulnerabilities

CVE-2025-13841: Smart App Banners <= 1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'size' and 'verticalalign' 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: 2026-01-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The Smart App Banners plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'size' and 'verticalalign' parameters of the 'app-store-download' shortcode in all versions up to, and including, 1.2 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

• clevelandwebdeveloper Smart App Banners: through 1.2

References

• https://plugins.trac.wordpress.org/browser/smart-app-banners/tags/1.2/index.php#L321
• https://plugins.trac.wordpress.org/browser/smart-app-banners/trunk/index.php#L321
• https://www.wordfence.com/threat-intel/vulnerabilities/id/add85b9b-3a4d-4c46-a90f-10c9645e249d?source=cve

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