CVE-2026-33323
CVE-2026-33323 · Parse Server: Email verification resend page leaks user existence
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 6.3 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
parse-server
- Versions
- < 8.6.51: Affected
- >= 9.0.0, < 9.6.0-alpha.40: Affected
No fix published
parse-server npm
- Affected ranges
- SEMVER: ≥ 9.0.0, < 9.6.0-alpha.40
Update to 9.6.0-alpha.40
parse-server npm
- Affected ranges
- SEMVER: < 8.6.51
Update to 8.6.51
Original sources
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2026-33323