CVE-2021-20815: Improper Neutralization of Input During Web Page Generation

Cross-site scripting vulnerability in Edit Boilerplate screen of Movable Type Movable Type 7 r.4903 and earlier Movable Type 7 Series, Movable Type 6.8.0 and earlier Movable Type 6 Series, Movable Type Advanced 7 r.4903 and earlier Movable Type Advanced 7 Series, Movable Type Premium 1.44 and...