CVE-2026-10100 - Simple Custom Login Page Plugin

The Simple Custom Login Page plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the color settings fields (Page Background, Form Background, Text Color, Link Color) in versions up to and including 1.0.3. This is due to insufficient input sanitization of the color option values (they were registered with register_setting() and stored via the Settings API/update_option() with no sanitize_callback) combined with the values being output into a block on wp-login.php using esc_attr(), which is incorrect for a CSS context (it does not escape ;, {, }, / or *).…

CVE-2026-10100