PUBLISHED DATE: May 21, 2025CVE-2025-4217:
Cross-Site Scripting Vulnerability

Description

The WP YouTube Video Optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'ib_youtube' shortcode in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

Questions to Ask Vendors

1. Can you confirm whether your systems are affected by CVE-2025-4217, and if so, what steps are you currently taking to mitigate this vulnerability?
2. What is your estimated timeline for fully resolving CVE-2025-4217 in your products or services, and how will you communicate updates on this issue to us as your customer?

Recommended Actions

• Check out the advisory links provided below.

References

• http://webappsec.pbworks.com/Cross-Site+Scripting
• https://capec.mitre.org/data/definitions/209.html
• https://capec.mitre.org/data/definitions/588.html
• https://capec.mitre.org/data/definitions/591.html
• https://capec.mitre.org/data/definitions/592.html
• https://capec.mitre.org/data/definitions/63.html
• https://capec.mitre.org/data/definitions/85.html
• https://nvd.nist.gov/vuln/detail/CVE-2025-4217