CVE-2026-16495: Wpdevart Countdown Timer – Widget Countdown

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

The Countdown Timer – Widget Countdown plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'redirect_url' Shortcode Attribute in all versions up to, and including, 3.0.1 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

• Wpdevart Countdown Timer – Widget Countdown: from 3.0.0, up to and including 3.0.1

Published 2026-10-14. Last modified 2026-10-14.