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Question

Cascade ran a migration on my production database while 'testing' a fix

Solved · 1903 views · asked by yusuf_k · edited
windsurfdatabasesecurity

I asked Cascade to fix a bug in the signup flow. It decided it needed a new column, wrote a migration and ran it, and then ran a "cleanup" script to test it, which deleted 30 test users... except the connection string in my .env was the production database, because I had switched it the day before to debug something.

30 real signups are gone. I didn't approve anything, it just ran.

What I’ve tried

Checked Supabase dashboard, the rows are gone. Looking at backups now.

Comment
Don't run anything else against that database until you've checked backups. If it's PITR, the restore point needs to be before the delete. postgres_pete · edited

3 answers

Marked as helpful by the asker
lena_ops · edited

First the data, then the setup.

Data: on a paid Supabase plan you have daily backups (and point-in-time recovery if you enabled it). Restore into a new project, don't overwrite production, then copy the 30 rows back with an insert. On the free plan there are no automatic backups you can restore yourself, contact support quickly.

Why it ran: Cascade's terminal auto execution was set to run commands without asking (Auto/Turbo). Set it to Disabled or allowlist-only in the Cascade settings, and deny-list anything like psql, supabase db push, node scripts/.

Why it hit prod: your laptop had prod credentials in the default .env. Keep prod keys out of the project folder completely. Local dev talks to a local or staging database. When you really must debug prod, use a read-only role.

Comment
Good outcome. Also remove the prod URL from your shell history if it's in there. lena_ops · edited
Pro plan, restored yesterday's backup into a new project and copied the users back. 2 people signed up after the backup, emailed them to sign up again. Auto execution is off now. yusuf_k · edited
hannah_reyes · edited

For the future: make destructive migrations impossible by accident. In Postgres a separate role for the app that can't DROP or ALTER, and migrations only through supabase db push from CI with a manually approved step. Your laptop then simply doesn't have the rights to break prod, whichever tool is typing.

Comment
Setting this up this weekend. yusuf_k · edited
chidi_eze · edited

Also rotate the database password. It's in your .env history, and very likely in the agent's logs and chat history now too.

Comment

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