{"id":"CVE-2026-33042","aliases":["BIT-parse-2026-33042","GHSA-wjqw-r9x4-j59v"],"url":"https://o3.security/vulnerability/CVE-2026-33042","summary":"Parse Server affected by empty authData bypassing credential requirement on signup","details":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.29 and 8.6.49, 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. The fix in 9.6.0-alpha.29 and 8.6.49 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. As a workaround, use a Cloud Code `beforeSave` trigger on the `_User` class to reject signups where `authData` is empty and no username/password is provided.","published":"2026-03-18T21:54:05.137Z","modified":"2026-08-12T03:51:27.357964614Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"parse-server","fixedVersion":"9.6.0-alpha.29"},{"ecosystem":"npm","name":"parse-server","fixedVersion":"8.6.49"}],"fix":{"url":"https://github.com/parse-community/parse-server/pull/10219","label":"parse-community/parse-server#10219"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33042.json"},{"type":"ADVISORY","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-wjqw-r9x4-j59v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33042"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10219"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10220"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:27.357964614Z"}}