CVE-2026-33323

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.

The following products are affected by CVE-2026-33323 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33323.

URL	Resource
https://github.com/parse-community/parse-server/commit/967aa57732202009b2389ce9ecb3130d53d657e5
https://github.com/parse-community/parse-server/commit/fbda4cb0c5cbc8fad08a216823b6b64d4ae289c3
https://github.com/parse-community/parse-server/pull/10238
https://github.com/parse-community/parse-server/pull/10243
https://github.com/parse-community/parse-server/security/advisories/GHSA-h29g-q5c2-9h4f