Information disclosure in Parse-Community Parse-Server
CVE-2026-66008
Parse Server versions >= 9.0.0 before 9.10.0-alpha.6 and >= 8.2.2 before 8.6.87 disclose Pointer and Relation target class names through GraphQL validation and input-coercion error messages when public schema introspection is disabled (graphQLPublicIntrospection: false, the default). Because these errors are produced before authentication, authorization, or any resolver runs, an unauthenticated client possessing only the public application ID can trigger errors on Pointer or Relation fields to reconstruct hidden schema class names, partially defeating the schema-hiding protection. Only schema metadata (class names) is exposed; no object data, credentials, or user records are disclosed.
Published · last modified .
EPSS exploit prediction
EPSS: 0.006 (45.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Parse-Community Parse-Server — versions 9.0.0, 9.10.0-alpha.6, 8.2.2
Weakness classification (CWE)
References
- github.com/parse-community/parse-server/security/advisories/GHSA-r2g6-4f6j-f6rf (vendor-advisory)
- www.vulncheck.com/advisories/parse-server-information-disclosure-via-graphql-er… (third-party-advisory)