Parse Server: Email verification resend page leaks user existence
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.6.0-alpha.40 | 9.6.0-alpha.40 |
parse-servernpm | < 8.6.51 | 8.6.51 |
Affected products
3- osv-coords2 versions
< 8.6.51+ 1 more
- (no CPE)range: < 8.6.51
- (no CPE)range: >= 9.0.0, < 9.6.0-alpha.40
- Range: < 8.6.51
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-h29g-q5c2-9h4fghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33323ghsaADVISORY
- github.com/parse-community/parse-server/commit/967aa57732202009b2389ce9ecb3130d53d657e5ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/commit/fbda4cb0c5cbc8fad08a216823b6b64d4ae289c3ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10238ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10243ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-h29g-q5c2-9h4fghsax_refsource_CONFIRMWEB
News mentions
0No linked articles in our index yet.