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CVE-2022-29421: WordPress Countdown & Clock plugin <= 2.3.2 - Reflected Cross-Site Scripting (XSS) vulnerability

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-06 · updated 2026-06-17
• Weakness: CWE-79

Description

Reflected Cross-Site Scripting (XSS) vulnerability in Adam Skaat's Countdown & Clock plugin on WordPress via &ycd_type vulnerable parameter.

Affected products

• Adam Skaat Countdown & Clock (WordPress plugin): through 2.3.2

References

• https://patchstack.com/database/vulnerability/countdown-builder/wordpress-countdown-clock-plugin-2-3-0-stored-cross-site-scripting-xss-vulnerability
• https://wordpress.org/plugins/countdown-builder/
• https://patchstack.com/database/vulnerability/countdown-builder/wordpress-countdown-clock-plugin-2-3-0-stored-cross-site-scripting-xss-vulnerability
• https://wordpress.org/plugins/countdown-builder/

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