As you may know, Drupal 6 has reached End-of-Life (EOL) which means the Drupal Security Team is no longer doing Security Advisories or working on security patches for Drupal 6 core or contrib modules - but the Drupal 6 LTS vendors are and we're one of them!
Today, there is a Moderately Critical security release for Drupal core to fix a Cross Site Scripting (XSS) vulnerability.
Folks have been asking us, so this is just a short note to say that this issue does NOT affect Drupal 6. So, you can focus just on updating your Drupal 7 and Drupal 8 sites today. :-)
Thanks!