{"id":"CVE-2026-30854","summary":"Parse Server: GraphQL `__type` introspection bypass via inline fragments when public introspection is disabled","details":"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.","aliases":["BIT-parse-2026-30854","GHSA-q5q9-2rhp-33qw"],"modified":"2026-08-12T03:51:25.365797049Z","published":"2026-03-07T16:24:10.312Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30854.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30854.json"},{"type":"ADVISORY","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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/parse-community/parse-server","events":[{"introduced":"9935fc74662fe27cab9ea3a4145913953e721d25"},{"fixed":"6b1b50c8baf7e332e47307f81db7c48bca924bdc"}],"database_specific":{"extracted_events":[{"introduced":"9.3.1-alpha.3"},{"fixed":"9.5.0-alpha.10"},{"introduced":"9.4.0"},{"fixed":"9.5.0"}],"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30854.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"}]}