CVE-2025-13841
Unknown Unknown - Not Provided

Stored XSS in Smart App Banners WordPress Plugin Allows Script Injection

Publication date: 2026-01-07

Last updated on: 2026-01-07

Assigner: Wordfence

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.

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Meta Information

Published
2026-01-07
Last Modified
2026-01-07
Generated
2026-07-06
AI Q&A
2026-01-07
EPSS Evaluated
2026-07-05
NVD
CVE-2025-13841
EUVD
EUVD-2026-1327

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wp_plugins smart_app_banners to 1.2 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Smart App Banners plugin for WordPress. It occurs via the 'size' and 'verticalalign' parameters of the 'app-store-download' shortcode in versions up to 1.2. The problem arises because the plugin does not properly sanitize or escape user-supplied input for these parameters, allowing authenticated users with Contributor-level access or higher to inject malicious scripts that execute when other users view the affected pages.

Impact Analysis

An attacker with Contributor-level access or higher can exploit this vulnerability to inject arbitrary scripts into pages. These scripts execute in the context of users who visit the injected pages, potentially leading to theft of user credentials, session hijacking, defacement, or other malicious actions that compromise the security and integrity of the website and its users.

Mitigation Strategies

Update the Smart App Banners plugin for WordPress to a version later than 1.2 where the vulnerability is fixed. Additionally, restrict Contributor-level access and above until the update is applied to prevent exploitation via the 'size' and 'verticalalign' parameters in the 'app-store-download' shortcode.

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