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CVE-2025-14144: Mstoic Shortcodes plugin for WordPress: Unsecured YouTube Embeds Can Inject Malware

CVE-2025-14144 · published 10 months ago

Summary

The Mstoic Shortcodes plugin for WordPress allows attackers to inject malicious scripts into YouTube videos, which can execute when users view the videos. This affects all versions up to 2.0. To fix, update the plugin to the latest version or remove it until a fix is available.

Original advisory text

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.

References

Fix within

Internet-facing 60 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker partial control

Severity

6.4 Medium

Exploitation

<1% chance of attack within 30 days

Type

CWE-79Cross-site Scripting (XSS)

Timeline

Published7 Jan 2026

Updated3 Nov 2026

First seen7 Mar 2026

Sources

CVE-2025-14144 · NVD

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