CVE-2026-33323 | BDVDB-2026-322309 Detail
parse-communityparse-server
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.
Impact#
Per CVSS v4.0: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-204 Observable Response Discrepancy
References#
- https://github.com/parse-community/parse-server/security/advisories/GHSA-h29g-q5c2-9h4f
- 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/commit/967aa57732202009b2389ce9ecb3130d53d657e5
- https://github.com/parse-community/parse-server/commit/fbda4cb0c5cbc8fad08a216823b6b64d4ae289c3
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.