CVE-2025-13898CWE-79cross-site-scripting

CVE-2025-13898

Medium · published December 6, 2025

CVSS v3.1
6.4
EPSS
0%
Percentile
13.0
In the wild
Unconfirmed
What it is

The Ultra Skype Button plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btn_id' parameter of the [ultra_skype] shortcode in all versions up to, and including, 1.0 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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00230 · 13.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-12-06T11:15Z
References (5)
https://plugins.trac.wordpress.org/browser/ultra-skype-button/tags/1.0/index.php#L39 · [email protected]https://plugins.trac.wordpress.org/browser/ultra-skype-button/tags/1.0/index.php#L44 · [email protected]https://plugins.trac.wordpress.org/browser/ultra-skype-button/trunk/index.php#L39 · [email protected]https://plugins.trac.wordpress.org/browser/ultra-skype-button/trunk/index.php#L44 · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/20b3c88f-a0df-4814-83b6-27440c5ad38e?source=cve · [email protected]
EPSS history
Timeline
  • 06 DEC 05:49Z
    Ultra Skype Button <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'btn_id' Shortcode Attribute
    cvelistv5