CVE-2026-30854 — Parse Server: GraphQL `__type` introspection bypass via inline fragments when public introspection is disabled
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 graphQL…
Published: 2026-03-07 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7