PT-2025-49351 · WordPress · Ultra Skype Button

Published 2025-12-06 · Updated 2025-12-06 · CVE-2025-13898

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Ultra Skype Button versions prior to 1.0

Description The Ultra Skype Button plugin for WordPress is susceptible to Stored Cross-Site Scripting. This is due to insufficient input sanitization and output escaping in the btn id parameter of the [ultra skype] shortcode. Authenticated attackers with Contributor-level access or higher can inject arbitrary web scripts into pages. These scripts will execute when a user accesses the affected page.

Recommendations Update Ultra Skype Button to a version later than 1.0.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-13898

Affected Products

Ultra Skype Button

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2025-13898 · Security Note
• https://plugins.trac.wordpress.org/browser/ultra-skype-button/tags/1.0/index.php#L39 · Note
• https://twitter.com/VulmonFeeds/status/1997199492089557332 · Twitter Post
• https://plugins.trac.wordpress.org/browser/ultra-skype-button/trunk/index.php#L39 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/20b3c88f-a0df-4814-83b6-27440c5ad38e?source=cve · Note
• https://plugins.trac.wordpress.org/browser/ultra-skype-button/tags/1.0/index.php#L44 · Note
• https://twitter.com/CVEnew/status/1997196809257771345 · Twitter Post
• https://plugins.trac.wordpress.org/browser/ultra-skype-button/trunk/index.php#L44 · Note
• https://t.me/CVEtracker/38994 · Telegram Post