Glide App Security Review

Row Owners restricts what a signed-in user can download from Glide’s servers based only on the email address they used to sign in; every other visibility rule in Glide is a client convenience, not a permission.

In Glide, hiding something from view is a design choice, not a security control

Glide’s own documentation is direct about what actually restricts data: Row Owners lets you restrict who can download or access data based on the email address a user signs in with, and Glide’s servers refuse to send a row to anyone who does not own it. Everything else that looks like access control is not: Glide’s guidance on Roles states plainly that conditions are not security features and that an app can still download data in the background even when the interface hides it, and the User Profiles guide repeats the same warning about visibility conditions, hidden tabs and removed components. We test every screen built on that assumption against what the client can actually retrieve.

Row Owners only works once something is actually set as an owner column, and that is not automatic everywhere. Glide’s built-in Users table has Row Owners enabled by default, but the User Profiles guide’s own advice is to add Row Owners deliberately if you swap in a table from Google Sheets or another source instead. Roles compound the same table: a user role is just a value in a column, it cannot be assigned by the end user themselves, and Glide will not let you use a computed column such as Make Array or Template as the role source, only a plain column or a workflow-updated Multiple Texts column. We test whether every table holding user data actually has an owner column, and whether every role that gates a row was set up the way Glide’s own guidance describes.

The data source underneath adds a second layer. Glide’s own data source guide confirms an app stays in two-way sync with Google Sheets, Airtable, Excel, BigQuery, PostgreSQL, Google Cloud SQL, MySQL, SQL Server or Glide’s own Glide Tables, and Protected Columns exist because an unprotected column in that source is downloaded to every user’s device even if your layout never shows it or hides it behind a condition. On Business and Enterprise plans, the separate Glide Tables API reaches the same tables with its own Bearer token, a route that has nothing to do with the Row Owners or Roles a signed-in app user is bound by. It is the same question we test on a Bubble app’s Privacy Rules: does every route into the data enforce the same restriction, or just the one your layout put in front of you.