jenkins: Stored XSS vulnerability in expandable textbox form control

In Jenkins 2.196 and earlier, LTS 2.176.3 and earlier, the f:expandableTextBox form control interpreted its content as HTML when expanded, resulting in a stored XSS vulnerability exploitable by users with permission to define its contents typically Job/Configure...

Stored XSS vulnerability in expandable textbox form control

Jenkins form controls include an expandable textbox that can transform from a single-line text box to a multi-line text area. The implementation of this transformation interpreted the text content of the form field as HTML. This resulted in a cross-site scripting vulnerability exploitable by...