CVE-2024-10631: 
WordPress vulnerability analysis and mitigation

The Countdown Timer for WordPress Block Editor plugin through version 1.0.5 contains a stored Cross-Site Scripting (XSS) vulnerability. The vulnerability was discovered on October 16, 2024, and was assigned CVE-2024-10631. This security issue affects WordPress installations using the Countdown Timer Block plugin (WPScan).

The vulnerability stems from the plugin's failure to properly validate and escape block options before outputting them back in pages or posts where the block is embedded. The issue has been classified as CWE-79 (Cross-Site Scripting) with a CVSS score of 6.8 (medium severity). The vulnerability can be exploited through the block's 'On Date Expiry' feature when setting the redirect URL (WPScan).

This vulnerability allows users with contributor-level access or higher to perform Stored Cross-Site Scripting attacks. When exploited, the attacker can inject malicious JavaScript code that executes when the countdown timer expires, potentially affecting admin users who view the compromised content (WPScan).

As of the current reporting, there is no known fix available for this vulnerability. Users of the Countdown Timer Block plugin should consider implementing additional security measures or temporarily disabling the plugin until a patch is released (WPScan).