Below script is available in Technet. This script basically list permission for all users irrespective of their permission level. You can export this to CSV and use Excel to filter only Edit.
GetUserAccessReport "http://site" > "c:\path\permision_report.csv"
You can download script from https://gallery.technet.microsoft.com/SharePoint-Access-Report-ac5e8235
Script
#Script written and modified by Adnan Amin
#Blog: http://mstechtalk.com
#twitter: @adnan_amin
#facebook: https://www.facebook.com/groups/SharePoint.Pakistan/
#facebook: https://www.facebook.com/MSTechTalk
#The initial idea was taken from another technet gallery script by Salaudeen Rajack at https://gallery.technet.microsoft.com/office/SharePoint-Permission-2840f327
#Script written by Salaudeen only genrate report for a single person, where as below script generates acceess permissions details for all users.
Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue
Function GetUserAccessReport($WebAppURL, $FileUrl)
{
#Get All Site Collections of the WebApp
$SiteCollections = Get-SPSite -WebApplication $WebAppURL -Limit All
#Write CSV- TAB Separated File) Header
"URL `t Site/List `t Title `t PermissionType `t Permissions `t LoginName" | out-file $FileUrl
#Check Web Application Policies
$WebApp= Get-SPWebApplication $WebAppURL
foreach ($Policy in $WebApp.Policies)
{
#Check if the search users is member of the group
#if($Policy.UserName -eq $SearchUser)
# {
#Write-Host $Policy.UserName
$PolicyRoles=@()
foreach($Role in $Policy.PolicyRoleBindings)
{
$PolicyRoles+= $Role.Name +";"
}
#Write-Host "Permissions: " $PolicyRoles
"$($AdminWebApp.URL) `t Web Application `t $($AdminSite.Title)`t Web Application Policy `t $($PolicyRoles) `t $($Policy.UserName)" | Out-File $FileUrl -Append
#}
}
#Loop through all site collections
foreach($Site in $SiteCollections)
{
#Check Whether the Search User is a Site Collection Administrator
foreach($SiteCollAdmin in $Site.RootWeb.SiteAdministrators)
{
"$($Site.RootWeb.Url) `t Site `t $($Site.RootWeb.Title)`t Site Collection Administrator `t Site Collection Administrator `t $($SiteCollAdmin.LoginName)" | Out-File $FileUrl -Append
}
#Loop throuh all Sub Sites
foreach($Web in $Site.AllWebs)
{
if($Web.HasUniqueRoleAssignments -eq $True)
{
#Get all the users granted permissions to the list
foreach($WebRoleAssignment in $Web.RoleAssignments )
{
#Is it a User Account?
if($WebRoleAssignment.Member.userlogin)
{
#Get the Permissions assigned to user
$WebUserPermissions=@()
foreach ($RoleDefinition in $WebRoleAssignment.RoleDefinitionBindings)
{
$WebUserPermissions += $RoleDefinition.Name +";"
}
#write-host "with these permissions: " $WebUserPermissions
#Send the Data to Log file
"$($Web.Url) `t Site `t $($Web.Title)`t Direct Permission `t $($WebUserPermissions) `t $($WebRoleAssignment.Member.LoginName)" | Out-File $FileUrl -Append
}
#Its a SharePoint Group, So search inside the group and check if the user is member of that group
else
{
foreach($user in $WebRoleAssignment.member.users)
{
#Get the Group's Permissions on site
$WebGroupPermissions=@()
foreach ($RoleDefinition in $WebRoleAssignment.RoleDefinitionBindings)
{
$WebGroupPermissions += $RoleDefinition.Name +";"
}
#write-host "Group has these permissions: " $WebGroupPermissions
#Send the Data to Log file
"$($Web.Url) `t Site `t $($Web.Title)`t Member of $($WebRoleAssignment.Member.Name) Group `t $($WebGroupPermissions) `t $($user.LoginName)" | Out-File $FileUrl -Append
}
}
}
}
#******** Check Lists with Unique Permissions ********/
foreach($List in $Web.lists)
{
if($List.HasUniqueRoleAssignments -eq $True -and ($List.Hidden -eq $false))
{
#Get all the users granted permissions to the list
foreach($ListRoleAssignment in $List.RoleAssignments )
{
#Is it a User Account?
if($ListRoleAssignment.Member.userlogin)
{
#Get the Permissions assigned to user
$ListUserPermissions=@()
foreach ($RoleDefinition in $ListRoleAssignment.RoleDefinitionBindings)
{
$ListUserPermissions += $RoleDefinition.Name +";"
}
#write-host "with these permissions: " $ListUserPermissions
#Send the Data to Log file
"$($List.ParentWeb.Url)/$($List.RootFolder.Url) `t List `t $($List.Title)`t Direct Permission1 `t $($ListUserPermissions) `t $($ListRoleAssignment.Member)" | Out-File $FileUrl -Append
}
#Its a SharePoint Group, So search inside the group and check if the user is member of that group
else
{
foreach($user in $ListRoleAssignment.member.users)
{
#Get the Group's Permissions on site
$ListGroupPermissions=@()
foreach ($RoleDefinition in $ListRoleAssignment.RoleDefinitionBindings)
{
$ListGroupPermissions += $RoleDefinition.Name +";"
}
#write-host "Group has these permissions: " $ListGroupPermissions
#Send the Data to Log file
"$($Web.Url) `t List `t $($List.Title)`t Member of $($ListRoleAssignment.Member.Name) Group `t $($user.LoginName) `t $($user.LoginName)" | Out-File $FileUrl -Append
}
}
}
}
}
}
}
}