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OpenAdvisories
Medium · 6.9 CVE-2026-30854 BIT-parse-2026-30854EUVD-2026-10171GHSA-q5q9-2rhp-33qw

Parse Server: GraphQL `__type` introspection bypass via inline fragments when public introspection is disabled

Published Mar 7, 2026 · Updated Mar 9, 2026 · Assigned by GitHub_M

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.3.1-alpha.3 to before version 9.5.0-alpha.10, when graphQLPublicIntrospection is disabled, __type queries nested inside inline fragments (e.g. ... on Query { __type(name:"User") { name } }) bypass the introspection control, allowing unauthenticated users to perform type reconnaissance. __schema introspection is not affected. This issue has been patched in version 9.5.0-alpha.10.

Affected products

VendorProductAffectedFixed
parse-community parse-server >= 9.3.1-alpha.3, < 9.5.0-alpha.10 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm parse-server >= 9.3.1-alpha.3, < 9.5.0-alpha.10 9.5.0-alpha.10 GHSA-q5q9-2rhp-33qw

References