jQuery UI is a third-party library used by Drupal. This library was previously thought to be end-of-life.
Late in 2021, jQuery UI announced that they would be continuing development, and released a jQuery UI 1.13.0 version. As part of this 1.13.0 update, they disclosed the following security issue that may affect Drupal 9 and 7:
of option of the .position() utilIt is possible that this vulnerability is exploitable with some Drupal modules. As a precaution, this Drupal security release applies the fix for the above cross-site description issue, without making any of the other changes to the jQuery version that is included in Drupal.
This advisory is not covered by Drupal Steward.