What’s Vulnerable › Vulnerabilities

CVE-2025-14144: Mstoic Shortcodes <= 2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'start' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The Mstoic Shortcodes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'start' parameter of the ms_youtube_embeds shortcode in all versions up to, and including, 2.0 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.

Affected products

• Mstoic Shortcodes: through 2.0

References

• https://plugins.trac.wordpress.org/browser/mstoic-shortcodes/tags/2.0/functions/shortcodes/youtube_embeds.php#L117
• https://plugins.trac.wordpress.org/browser/mstoic-shortcodes/trunk/functions/shortcodes/youtube_embeds.php#L117
• https://www.wordfence.com/threat-intel/vulnerabilities/id/6e83c039-9b15-4e0c-8b07-3b906938c138?source=cve

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