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CVE-2026-66009

Parse Server 9.0.0 Information Disclosure via GraphQL Error Messages

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 9.10.0-alpha.5, 8.6.86
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

Parse Server versions >= 9.0.0 before 9.10.0-alpha.5 and >= 8.2.2 before 8.6.86 return GraphQL validation error messages that name required custom input fields even when public introspection is disabled (graphQLPublicIntrospection: false, the default). A client holding only the public application id — with no user session, master key, or maintenance key — can trigger validation errors to learn the names of required (non-null) custom fields on classes it already references by name, partially defeating the schema-hiding intent of disabling public introspection. No stored data, credentials, optional field names, unreferenced class names, or Cloud Code function names are exposed.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • parse-community parse-server

    From 9.0.0 · fixed in 9.10.0-alpha.5

  • parse-community parse-server

    From 8.2.2 · fixed in 8.6.86

References 2

GitHub · parse-community/parse-server

vulncheck.com