CVE-2026-33323

UNKNOWN 0.0

Parse Server: Email verification resend page leaks user existence

CVSS Score

0.0

EPSS Score

0.1%

EPSS Percentile

16th

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.

CWE	CWE-204
Vendor	parse-community
Product	parse-server
Published	Mar 24, 2026
Last Updated	Mar 25, 2026

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Affected Versions

parse-community / parse-server

< 8.6.51 >= 9.0.0, < 9.6.0-alpha.40

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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