CVE-2026-33042
Parse Server affected by empty authData bypassing credential requirement on signup
Impact
### Impact A user can sign up without providing credentials by sending an empty `authData` object, bypassing the username and password requirement. This allows the creation of authenticated sessions without proper credentials, even when anonymous users are disabled. ### Patches The fix ensures that empty or non-actionable `authData` is treated the same as absent `authData` for the purpose of credential validation on new user creation. Username and password are now required when no valid auth provider data is present. ### Workarounds Use a Cloud Code `beforeSave` trigger on the `_User` class to reject signups where `authData` is empty and no username/password is provided.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0, < 9.6.0-alpha.29 | 9.6.0-alpha.29 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Parseplatform | Parse-Server | before 8.6.49 from 9.0.0 before 9.6.0 Version 9.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/parse-community/parse-server/pull/10219
- https://github.com/parse-community/parse-server/pull/10220
- https://github.com/parse-community/parse-server/security/advisories/GHSA-wjqw-r9x4-j59v
- https://github.com/advisories/GHSA-wjqw-r9x4-j59v
- https://nvd.nist.gov/vuln/detail/CVE-2026-33042