Vulnerability · Published Dec 12, 2025 · Assigned by Wordfence
CVE-2025-13889Simple Nivo Slider <= 0.5.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Medium 6.4
In plain English
A medium-severity cross-site scripting in Simple Nivo Slider from tmus. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official description
The Simple Nivo Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' shortcode parameter in all versions up to, and including, 0.5.6 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tmus | Simple Nivo Slider | 0 – through 0.5.6 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0c1c343c-ef16-4468-a983-0dc9fd152dd5?source=cve
- https://plugins.trac.wordpress.org/browser/simple-nivo-slider/tags/0.5.6/simple-nivo-slider.php#L208
- https://plugins.trac.wordpress.org/browser/simple-nivo-slider/trunk/simple-nivo-slider.php#L208