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Description
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- I am not disclosing a vulnerability.
- I am not just asking a question.
- I have searched through existing issues.
- I can reproduce the issue with the latest version of Parse Server.
Issue Description
Setting a subdocument entirely, followed by an unset of a nested field causes an internal server error while the object is being saved, if the object existed beforehand.
Steps to reproduce
const myObj = new Parse.Object('MyClass');
await myObj.save(null, {useMasterKey: true});
myObj.set('data', {a: 5});
myObj.unset('data.a');
await myObj.save(null, {useMasterKey: true});
console.log('a');
Actual Outcome
error: Uncaught internal server error. Updating the path 'data.a' would create a conflict at 'data' {"code":40,"codeName":"ConflictingUpdateOperators","ok":0,"stack":"MongoServerError: Updating the path 'data.a' would create a conflict at 'data'\n at Connection.onMessage (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/connection.js:202:30)\n at MessageStream.<anonymous> (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/connection.js:62:60)\n at MessageStream.emit (events.js:400:28)\n at processIncomingData (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/message_stream.js:108:16)\n at MessageStream._write (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/message_stream.js:28:9)\n at writeOrBuffer (internal/streams/writable.js:358:12)\n at MessageStream.Writable.write (internal/streams/writable.js:303:10)\n at Socket.ondata (internal/streams/readable.js:731:22)\n at Socket.emit (events.js:400:28)\n at addChunk (internal/streams/readable.js:293:12)"}
MongoServerError: Updating the path 'data.a' would create a conflict at 'data'
at Connection.onMessage (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/connection.js:202:30)
at MessageStream.<anonymous> (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/connection.js:62:60)
at MessageStream.emit (events.js:400:28)
at processIncomingData (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/message_stream.js:108:16)
at MessageStream._write (/home/kartal/Desktop/ocell/parse-server-example/node_modules/parse-server/node_modules/mongodb/lib/cmap/message_stream.js:28:9)
at writeOrBuffer (internal/streams/writable.js:358:12)
at MessageStream.Writable.write (internal/streams/writable.js:303:10)
at Socket.ondata (internal/streams/readable.js:731:22)
at Socket.emit (events.js:400:28)
at addChunk (internal/streams/readable.js:293:12)
Expected Outcome
The object should be saved to the database with data = {}
Environment
Server
- Parse Server version:
5.3.0 - Operating system:
ubuntu 20.04 - Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc):
local
Database
- System (MongoDB or Postgres):
MongoDB - Database version:
5.0.13 - Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc):
local
Client
- SDK (iOS, Android, JavaScript, PHP, Unity, etc):
parse dashboard - SDK version:
4.1.4