SB2026091509 - Information Exposure Through an Error Message in Parse Server

Description

This security bulletin contains information about 1 vulnerability.

1) Information Exposure Through an Error Message (CVE-ID: CVE-2026-66008)

CWE-ID: CWE-209 - Information Exposure Through an Error Message

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to disclose hidden schema class names.

The vulnerability exists due to generation of error messages containing sensitive information in GraphQL validation and input-coercion error handling when processing GraphQL operations that reference Pointer or Relation field names. A remote attacker can elicit error messages containing target class names to disclose hidden schema class names.

The GraphQL API must be mounted with public schema introspection disabled; only schema metadata is exposed, not object data, credentials, or user records.

Remediation

Install update from vendor's website.

References

• https://github.com/parse-community/parse-server/security/advisories/GHSA-r2g6-4f6j-f6rf
• https://github.com/parse-community/parse-server/pull/10568