CVE-2026-47248
Parse Server: GraphQL "Did you mean" validation suggestions disclose schema to unauthenticated callers
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1, Parse 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 issue has been patched in versions 8.6.78 and 9.9.1.
How to fix CVE-2026-47248
To remediate CVE-2026-47248, upgrade the affected package to a fixed version below.
- —upgrade to 8.6.78 or later
- —upgrade to 9.9.1-alpha.2 or later
Is CVE-2026-47248 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 8.6.78, >= 9.0.0, < 9.9.1
- >= 9.0.0, < 9.9.1-alpha.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |