CVE-2026-66008
Parse Server 9.0.0 Information Disclosure via GraphQL Error Messages
Description
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.
INFO
Published Date :
July 24, 2026, 1:18 p.m.
Last Modified :
Oct. 24, 2026, 1:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-66008
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Parse Server to version 8.6.87 or later.
- Update Parse Server to version 9.10.0-alpha.6 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-66008.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-66008 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-66008
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-66008 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-66008 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Added Translation Title: parse-server de parse-community, Description: Las versiones de Parse Server >= 9.0.0 anteriores a 9.10.0-alpha.6 y >= 8.2.2 anteriores a 8.6.87 revelan nombres de clases objetivo de Pointer y Relation a través de mensajes de error de validación de GraphQL y de coerción de entrada cuando la introspección pública del esquema está deshabilitada (graphQLPublicIntrospection: false, el valor predeterminado). Debido a que estos errores se producen antes de la autenticación, la autorización o la ejecución de cualquier resolvedor, un cliente no autenticado que posee solo el ID de aplicación público puede activar errores en campos Pointer o Relation para reconstruir nombres de clases de esquema ocultos, derrotando parcialmente la protección de ocultación del esquema. Solo se exponen metadatos del esquema (nombres de clases); no se divulgan datos de objetos, credenciales o registros de usuario. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-66008', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-24T13:37:57.382424Z'} -
New CVE Received by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'parse-community', 'product': 'parse-server', 'versions': [{'status': 'affected', 'version': '9.0.0', 'lessThan': '9.10.0-alpha.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '9.10.0-alpha.6', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/parse-server', 'defaultStatus': 'unaffected'}, {'vendor': 'parse-community', 'product': 'parse-server', 'versions': [{'status': 'affected', 'version': '8.2.2', 'lessThan': '8.6.87', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '8.6.87', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/parse-server', 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-209 Added Reference https://github.com/parse-community/parse-server/security/advisories/GHSA-r2g6-4f6j-f6rf Added Reference https://www.vulncheck.com/advisories/parse-server-information-disclosure-via-graphql-error-messages