CVE-2026-33409
Parse Server has an auth provider validation bypass on login via partial authData
Severity by source
Trivy's own label is CRITICAL. Rated critical by NVD, Bitnami. Rated lower by GHSA (high).
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.52 and 9.6.0-alpha.41, an authentication bypass vulnerability allows an attacker to log in as any user who has linked a third-party authentication provider, without knowing the user's credentials. The attacker only needs to know the user's provider ID to gain full access to their account, including a valid session token. This affects Parse Server deployments where the server option allowExpiredAuthDataToken is set to true. The default value is false. This issue has been patched in versions 8.6.52 and 9.6.0-alpha.41.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| bitnami::Bitnami Vulnerability Database | parse | 8.6.52, 9.6.0 |
| npm::GitHub Security Advisory npm | parse-server | 9.6.0-alpha.41, 8.6.52 |
References
- https://github.com/parse-community/parse-server
- https://github.com/parse-community/parse-server/commit/8d7df5639c4a35768fe8b78b4580b30e8a74721c
- https://github.com/parse-community/parse-server/commit/98f4ba5bcf2c199bfe6225f672e8edcd08ba732d
- https://github.com/parse-community/parse-server/pull/10246
- https://github.com/parse-community/parse-server/pull/10247
- https://github.com/parse-community/parse-server/security/advisories/GHSA-pfj7-wv7c-22pr
- https://nvd.nist.gov/vuln/detail/CVE-2026-33409