Bolt before 3.6.10 has XSS via an image's alt or title field.

Bolt 3.7.0, if Symfony Web Profiler is used, allows XSS because unsanitized search?search= input is shown on the _profiler page. NOTE: this is disputed because profiling was never intended for use in production. This is related to CVE-2018-12040

Cross Site Request Forgery (CSRF) in the bolt/upload File Upload feature in Bolt CMS 3.6.6 allows remote attackers to execute arbitrary code by uploading a JavaScript file to include executable extensions in the file/edit/config/config.yml configuration file.

Controller/Async/FilesystemManager.php in the filemanager in Bolt before 3.6.5 allows remote attackers to execute arbitrary PHP code by renaming a previously uploaded file to have a .php extension.

Bolt before 3.3.6 does not properly restrict access to _profiler routes, related to EventListener/ProfilerListener.php and Provider/EventListenerServiceProvider.php.

Bolt CMS 3.2.14 allows stored XSS via text input, as demonstrated by the Title field of a New Entry.

Bolt CMS 3.2.14 allows stored XSS by uploading an SVG document with a "Content-Type: image/svg+xml" header.

The theme editor in Bolt before 2.2.5 does not check the file extension when renaming files, which allows remote authenticated users to execute arbitrary code by renaming a crafted file and then directly accessing it.