CVE-2025-4217 WP YouTube Video Optimizer <= 1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
Authenticated attackers can inject arbitrary scripts via the plugin's shortcode, leading to code execution when users view affected pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-4217?
CVE-2025-4217 is a medium-severity cross-site scripting vulnerability in measuremarketing WP YouTube Video Optimizer, published on 21 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2025-4217?
How do I fix CVE-2025-4217?
No fix has been published for CVE-2025-4217 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-4217 being exploited?
There is no known exploitation of CVE-2025-4217 in the wild and no public exploit code.
Sources
Also known as GHSA-42qg-74gw-4v5q.