# CVE-2026-47248: Parse Server schema disclosure via GraphQL error suggestions

Source: https://junglewise.ai/threats/cve-2026-47248-parse-server-schema-disclosure-via-graphql-error-suggestions  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-12. Updated: 2026-06-12  
License: CC BY 4.0 with a link back

CVE-2026-47248 · Severity: medium · CVSS 4 · Published 2026-06-12

Parse Server is an open-source backend used to build and host applications. A security flaw in its GraphQL interface allows unauthorized individuals to discover the internal structure of the database (such as table and field names) by analyzing "Did you mean...?" suggestions in error messages. While this does not directly expose user data, it provides attackers with a map of the system that can be used to plan more targeted attacks.

Technologies: [parse-server (npm)](https://junglewise.ai/threats/technologies/parse-server). Vendors: [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-47248 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47248 being exploited in the wild.

**How severe is CVE-2026-47248?** Medium severity, with a CVSS score of 4, published 12 June 2026.

**Which products and versions are affected?** parse-server (npm) SEMVER:introduced=9.0.0,fixed=9.9.1-alpha.2.

**Is there a fix for CVE-2026-47248?** Yes. parse-server (npm): upgrade to 9.9.1-alpha.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-47248 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-47248?** Check whether you run parse-server (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- parse-server (npm): upgrade to 9.9.1-alpha.2 or later

  ```sh
  npm install parse-server@9.9.1-alpha.2
  ```


## Technical details

A schema enumeration vulnerability exists in Parse Server's GraphQL implementation due to the inclusion of 'Did you mean...?' suggestions in validation error messages. Even when public introspection is disabled (graphQLPublicIntrospection: false), an unauthenticated attacker with knowledge of the application ID can send malformed queries to iteratively reconstruct class names, field names, and mutation names. This occurs because the suggestions are generated during the validation phase before introspection gates are applied. The issue is resolved in versions 8.6.78 and 9.9.1-alpha.2 by the introduction of the SchemaSuggestionsControlPlugin, which strips these hints for unauthorized callers.

## Affected products

- Parse Community Parse Server >= 9.0.0, < 9.9.1-alpha.2; < 8.6.78

## Identifiers

- CVE-2026-47248
- GHSA-8cph-rgr4-g5vj

## Timeline

- 2026-05-18: advisory: GitHub Security Advisory GHSA-8cph-rgr4-g5vj published
- 2026-05-18: patched: Fixes merged into release branches
- 2026-06-12: disclosed: CVE-2026-47248 published to NVD

## References

- [https://github.com/parse-community/parse-server/pull/10467](https://github.com/parse-community/parse-server/pull/10467)
- [https://github.com/parse-community/parse-server/pull/10468](https://github.com/parse-community/parse-server/pull/10468)
- [https://github.com/parse-community/parse-server/security/advisories/GHSA-8cph-rgr4-g5vj](https://github.com/parse-community/parse-server/security/advisories/GHSA-8cph-rgr4-g5vj)

## Related threats

- [Duplicate Advisory: Parse Server vulnerable to stored XSS via malformed Content-Type bypassing file upload extension blocklist](https://junglewise.ai/threats/duplicate-advisory-parse-server-vulnerable-to-stored-xss-via-malformed-00d8867c)
- [Parse Server stored XSS via malformed Content-Type bypass](https://junglewise.ai/threats/cve-2026-61448-parse-server-stored-xss-via-malformed-content-type-bypass)
- [Parse Server information disclosure in LiveQuery ACL transitions](https://junglewise.ai/threats/cve-2026-57481-parse-server-information-disclosure-in-livequery-acl-transitions)
- [Parse Community Parse Server denial of service via nested query operators](https://junglewise.ai/threats/cve-2026-57480-parse-community-parse-server-denial-of-service-via-nested-query)
- [Parse Server stored XSS via file upload extension bypass](https://junglewise.ai/threats/cve-2026-55778-parse-server-stored-xss-via-file-upload-extension-bypass)