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Studio: Password Manager Can Autofill Account Login Into Database Password Fields

Supabase Studio's database password inputs (Reset database password and new project database password) only set autoComplete="off", which password managers like LastPass ignore. This allows the user's Supabase account password to be autofilled into the database password field, creating a credential reuse vulnerability and potential accidental database password exposure.

highConfidence 87%Next.js

Origin Analysis

The two database password inputs lack the standard password-manager opt-out attributes (autoComplete="new-password", data-1p-ignore, data-lpignore="true", data-form-type="other", data-bwignore) that are already used in other Studio secret fields. Only autoComplete="off" is insufficient because many password managers treat it as a hint, not a directive.

1. Use Chrome with the LastPass extension and a saved login for supabase.com.\n2. Open Project Settings → Database → Reset database password (or create a new project).\n3. Focus the database password field.\n4. LastPass shows its in-field icon and fill menu for the Supabase login and can autofill the account password into the database password field.

Fixing Code Block

0x7F 45 4C 46 02 01 01 000x90 12 AB 04 C1 7E 33 08
0xA4 1C 90 3E 77 0B D2 580x11 F6 6A 2C 80 19 DE 44
0x00 00 00 00 03 00 3E 000x01 00 B7 4D 55 90 0C 61
0x6C 69 62 63 2E 73 6F 2E0x36 00 8E 17 42 AA 05 F3
0xDE C0 DE 01 8B 45 FC 890xC7 5D 20 6F 91 03 E4 78
0x13 37 00 4F 9A 2D E1 700x08 B4 5C 22 71 D0 4A 16
0x48 8D 3D 22 01 00 00 E80x91 FF 0A 63 2E 57 B8 04
0x5A 91 C3 0E 44 70 1B 880x02 6F 39 C4 15 80 ED 27
0xFF 15 40 20 60 00 48 890xC3 90 7A 01 4C 28 B1 56
0x0F 1F 44 00 00 55 48 890xE5 C3 18 6D 92 0B 33 A7

Edge Case Audit

While these attributes are widely supported, no method is 100% effective across all password managers or browser versions. Some managers may still prompt to save the generated database password, which could be stored in the vault. If unexpected autofill or save prompts occur, roll back by restoring autoComplete="off" and removing the data-* attributes. Test in multiple browsers and extensions before release. Avoid using autoComplete="off" alone as it is often ignored.