A use after free issue discovered in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScript file.
https://github.com/ONLYOFFICE/core/commit/2b6ad83b36afd9845085b536969d366d1d61150a
https://github.com/ONLYOFFICE/DocumentServer
https://gist.github.com/merrychap/25eba8c4dd97c9e545edad1b8f0eadc2