CSRF-protection for authentication cookies. When enabled, this plugin makes sure the "SameSite" flag is set in authentication cookies.

Marco van Wieren

WPO365 | SAMESITE

Plugin for WordPress websites that require a user to sign in (e.g. with Microsoft using the WPO365 plugin) and that are loaded inside an iframe (e.g.

Ayesh Karunaratne

This plugin adds the “SameSite” cookie flag to WordPress’s authentication cookies. On supported browsers (all current IE, Edge, Chrome, and Firefox), this can effectively prevent all Cross-Site Request Forgery attacks throughout your WordPress site.
SameSite cookie flag support was added to PHP on version 7.3, but this plugin ships with a workaround to support all PHP versions WordPress supports.
There is no administrative UI provided: Activate this plugin, and you are all set!
You can configure the SameSite flag value from your WordPress configuration file. You cna pick a value from <code>Lax</code> (default), <code>Strict</code>, or <code>None</code>. You can read about <a href="https://php.watch/articles/PHP-Samesite-cookies" rel="nofollow ugc">SameSite cookies here</a>.
To configure the <code>SameSite</code> flag value, edit your WordPress configuration file (<code>wp-config.php</code>), and add the following lines right above <code>/** Sets up WordPress vars and included files. */</code>.
<pre><code>define( 'WP_SAMESITE_COOKIE', 'Lax' ); // Pick from 'Lax', 'Strict', or 'None'.
</code></pre>
Note that only the authentication cookies are affected. Regular cookies that your installed plugins set will not be affected, nor provide any meaningful value with <code>SameSite</code> flags.

SameSite Cookies

Wasted two days on this

I don't know why the Author created this plugin, It does not work, please remove it from the plugin library

Alternatives to SameSite Cookies

Top alternatives