Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.51 and 9.6.0-alpha.40, the Pages route and legacy PublicAPI route for resending email verification links return distinguishable responses depending on whether the provided username exists and has an unverified email. This allows an unauthenticated attacker to enumerate valid usernames by observing different redirect targets. The existing emailVerifySuccessOnInvalidEmail configuration option, which is enabled by default and protects the API route against this, did not apply to these routes. This issue has been patched in versions 8.6.51 and 9.6.0-alpha.40.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.51 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/commit/967aa57732202009b2389ce9ePatch
- https://github.com/parse-community/parse-server/commit/fbda4cb0c5cbc8fad08a21682Patch
- https://github.com/parse-community/parse-server/pull/10238Issue Tracking
- https://github.com/parse-community/parse-server/pull/10243Issue Tracking
- https://github.com/parse-community/parse-server/security/advisories/GHSA-h29g-q5Vendor Advisory
FAQ
What is CVE-2026-33323?
CVE-2026-33323 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.51 and 9.6.0-alpha.40, the Pages route and legacy PublicAPI route for rese...
How severe is CVE-2026-33323?
CVE-2026-33323 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33323?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.