CVE-2021-34636: Wpdevart Countdown And Countup, Woocommerce Sales Timer

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The Countdown and CountUp, WooCommerce Sales Timers WordPress plugin is vulnerable to Cross-Site Request Forgery via the save_theme function found in the ~/includes/admin/coundown_theme_page.php file due to a missing nonce check which allows attackers to inject arbitrary web scripts, in versions up to and including 1.5.7.

Affected products

• Wpdevart Countdown And Countup, Woocommerce Sales Timer: up to and including 1.5.7

Published 2021-09-28. Last modified 2026-06-17.