CVE-2025-11834: Wiellyam Wp Ad Gallery

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The WP AD Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'startindex' parameter of the ad-gallery shortcode in all versions up to, and including, 1.3. This is 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

• Wiellyam Wp Ad Gallery: up to and including 1.3

Published 2025-10-22. Last modified 2026-10-08.