WP School Calendar

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Unescaped parameter $args used in $wpdb->get_results()\n$args assigned unsafely at line 222.

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Detected usage of a non-sanitized input variable: $_GET['cat_id']

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Detected usage of a possibly undefined superglobal array index: $_GET['cat_id']. Check that the array index exists before using it.

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date() is affected by runtime timezone changes which can cause date/time to be incorrectly displayed. Use gmdate() instead.

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A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders.

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Processing form data without nonce verification.

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Resource version not set in call to wp_enqueue_script(). This means new versions of the script may not always be loaded due to browser caching.

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All output should be run through an escaping function (like echo esc_html_x() or echo esc_attr_x()), found '_ex'.

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wp_redirect() found. Using wp_safe_redirect(), along with the "allowed_redirect_hosts" filter if needed, can help avoid any chances of malicious redirects within code. It is also important to remember to call exit() after a redirect so that no other unwanted code is executed.

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Version parameter is not explicitly set or has been set to an equivalent of "false" for wp_register_script; This means that the WordPress core version will be used which is not recommended for plugin or theme development.

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All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$message'.

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Processing form data without nonce verification.

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PHP file should prevent direct access. Add a check like: if ( ! defined( 'ABSPATH' ) ) exit;

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Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "fs_plugins_api".

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The plugin name includes a restricted term. Your chosen plugin name - "WP School Calendar" - contains the restricted term "wp" which cannot be used at all in your plugin name.