{"id":"CVE-2026-47248","aliases":["BIT-parse-2026-47248","GHSA-8cph-rgr4-g5vj"],"url":"https://o3.security/vulnerability/CVE-2026-47248","summary":"Parse Server: GraphQL \"Did you mean\" validation suggestions disclose schema to unauthenticated callers","details":"### Impact\n\nParse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through `Did you mean ...?` suggestions embedded in GraphQL validation-error messages. An unauthenticated caller who knows only the public application id can iteratively send malformed queries to reconstruct class names, field names, argument names, mutation names, and input-object fields. This bypasses the `IntrospectionControlPlugin` enforced when `graphQLPublicIntrospection: false` (the default) and defeats the schema-hiding goal of prior advisories GHSA-48q3-prgv-gm4w and GHSA-q5q9-2rhp-33qw. Schema disclosure aids reconnaissance for downstream authorization probing but does not by itself leak object data or authentication material.\n\n### Patches\n\nA new `SchemaSuggestionsControlPlugin` Apollo plugin strips the `Did you mean ...?` suffix from GraphQL validation-error messages during `validationDidStart`, which runs before any introspection gate. The plugin applies only when `graphQLPublicIntrospection: false` and the caller is not a master-key or maintenance-key holder, matching the trust model of the existing `IntrospectionControlPlugin`.\n\n### Workarounds\n\nNo code workaround is available short of disabling the GraphQL API (`mountGraphQL: false`). Operators who require disclosure-resistant validation errors should upgrade to a patched release.\n\n### Resources\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-8cph-rgr4-g5vj\n- Fix Parse Server 9: https://github.com/parse-community/parse-server/pull/10467\n- Fix Parse Server 8: https://github.com/parse-community/parse-server/pull/10468","published":"2026-06-12T18:21:31.511Z","modified":"2026-08-12T03:51:34.163672859Z","cvss":null,"epss":{"score":0.00291,"percentile":0.21818,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"parse-server","fixedVersion":"9.9.1-alpha.2"},{"ecosystem":"npm","name":"parse-server","fixedVersion":"8.6.78"}],"fix":{"url":"https://github.com/parse-community/parse-server/pull/10467","label":"parse-community/parse-server#10467"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47248.json"},{"type":"ADVISORY","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-8cph-rgr4-g5vj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47248"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10467"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10468"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:34.163672859Z"}}