{"id":"GHSA-q5q9-2rhp-33qw","summary":"Parse Server: GraphQL `__type` introspection bypass via inline fragments when public introspection is disabled","details":"### Impact\n\nWhen `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.\n\n### Patches\n\nThe check was changed from a flat iteration over root-level selections to a recursive walk of all selection sets, detecting `__type` inside inline fragments at any depth.\n\n### Workarounds\n\nRequire master key authentication at the network layer (e.g. reverse proxy) for the GraphQL endpoint.\n\n### References\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-q5q9-2rhp-33qw\n- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.10","aliases":["BIT-parse-2026-30854","CVE-2026-30854"],"modified":"2026-03-16T03:05:24.173690Z","published":"2026-03-09T17:42:17Z","database_specific":{"nvd_published_at":"2026-03-07T17:15:52Z","cwe_ids":["CWE-863"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-09T17:42:17Z"},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-q5q9-2rhp-33qw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30854"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"}],"affected":[{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.3.1-alpha.3"},{"fixed":"9.5.0-alpha.10"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-q5q9-2rhp-33qw/GHSA-q5q9-2rhp-33qw.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}