uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking functionality).

In uBlock before 0.9.5.15, the $rewrite filter option allows filter-list maintainers to run arbitrary code in a client-side session when a web service loads a script for execution using XMLHttpRequest or Fetch, and the script origin has an open redirect.

Cross-site scripting (XSS) vulnerability in RefinedWiki Original Theme 3.x before 3.5.13 and 4.x before 4.0.12 for Confluence allows remote authenticated users with permissions to create or edit content to inject arbitrary web script or HTML via the versionComment parameter to pages/doeditpage.action.