CVE-2026-66009: Generation of Error Message Containing Sensitive Information

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 ...