LibreOffice is able to open CMIS URLs from the command line using the vnd.libreoffice.cmis:// URL scheme. However, installing LibreOffice does not install the URL handlers for these URLs. On Linux, please add: x-scheme-handler/vnd.libreoffice.cmis to the Mimetype list in the appropriate .desktop files. On Macintosh: <sberg> xkahn, I guess that needs to be addressed in LO's Info.plist On Windows: https://msdn.microsoft.com/en-us/library/aa767914%28v=vs.85%29.aspx
*** This bug has been marked as a duplicate of bug 72880 ***