What is CVE-2025-13841?

CVE-2025-13841 is a medium-severity vulnerability in Clevelandwebdeveloper Smart App Banners, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-01-07.

How severe is CVE-2025-13841?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Clevelandwebdeveloper Smart App Banners

CVE-2025-13841

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (14.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Clevelandwebdeveloper Smart App Banners — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-13841?: CVE-2025-13841 is a medium-severity vulnerability in Clevelandwebdeveloper Smart App Banners, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-01-07.
How severe is CVE-2025-13841?: Medium severity. CVSS v3 base score is 6.4 out of 10.