The "Editor" tab under the "Tables" section is vulnerable to stored XSS. It is possible to store XSS in all input fields as the code does not sanitise any of the user input.
Open a Table, go to the editor and enter a payload below in a cell, then save the Table <= 1.9.99 - <img src onerror=alert(/XSS/)> <= 1.10.0 - <svg><animate onbegin=alert(/XSS/) attributeName=x dur=1s>
2021-02-08 (about 2 years ago)
2021-02-08 (about 2 years ago)
2021-02-10 (about 2 years ago)