WP Accessibility < 1.7.0 - Minor Authenticated Stored XSS in custom CSS

1) Navigate to the Settings page of the plugin

https://example.com/wp-admin/options-general.php?page=wp-accessibility/wp-accessibility.php

2) Select the checkbox next to "Enable Skiplinks"

3) Under the "Styles for Skiplinks when they have focus" option, enter the following XSS payload:

</style><script>alert(/0/)</script>

4) Navigate to the WordPress homepage and you'll see an XSS popup