CVE-2026-31800: Parse Server Classes `_GraphQLConfig` And `_Audience` Master Vulnerability

HIGH
Advisory Identifier: GHSA-7xg7-rqf6-pw6c
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CWE-862
Published
Advisory Summary

CVE-2026-31800 is a HIGH classes `_graphqlconfig` and `_audience` master vulnerability (CWE-862: Missing Authorization) affecting Parse Server libraries in the npm ecosystem. The issue involves classes `_graphqlconfig` and `_audience` master key bypass via generic class routes. Remediation is available by upgrading affected packages to version 9.5.2-alpha.12, 8.6.25.

CVE-2026-31800 at a Glance

CVE Identifier CVE-2026-31800
GHSA Identifier GHSA-7xg7-rqf6-pw6c
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-862: Missing Authorization
Affected Product Parse Server
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-31800

To remediate this vulnerability, upgrade all affected Parse Server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

parse-server fixed: 9.5.2-alpha.12 
npm install parse-server@9.5.2-alpha.12
parse-server fixed: 8.6.25 
npm install parse-server@8.6.25
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls parse-server

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-31800, inspect your project dependencies using npm:

npm ls parse-server

Analyze the terminal output to locate any version of Parse Server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.5.2-alpha.12), your application is affected.

Note: The npm ls parse-server command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Parse Server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact The `_GraphQLConfig` and `_Audience` internal classes can be read, modified, and deleted via the generic `/classes/_GraphQLConfig` and `/classes/_Audience` REST API routes without master key authentication. This bypasses the master key enforcement that exists on the dedicated `/graphql-config` and `/push_audiences` endpoints. An attacker can read, modify and delete GraphQL configuration and push audience data. ### Patches The fix adds the affected internal classes to the `classesWithMasterOnlyAccess` list, ensuring that the generic `/classes/` routes enforce master key access consistently with the dedicated endpoints. ### Workarounds There is no known workaround. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-7xg7-rqf6-pw6c - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.12 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.25

CVE-2026-31800 Affected Parse Server Versions

2 component(s)
Fixed Versions:
9.5.2-alpha.128.6.25
Product / Package Ecosystem Affected Versions Fixed Version
parse-server
npm/parse-server
npm
≥ 9.0.0-alpha.1
< 9.5.2-alpha.12
9.5.2-alpha.12
parse-server
npm/parse-server
npm
< 8.6.25
8.6.25

References

GitHub Advisory / Wiki ADVISORY
https://github.com/parse-community/parse-server/security/advisories/GHSA-7xg7-rqf6-pw6c
NVD — CVE-2026-31800 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31800
Parse Server Source Repository REPOSITORY
https://github.com/parse-community/parse-server
Parse Server Release RELEASE
https://github.com/parse-community/parse-server/releases/tag/8.6.25
Parse Server Release RELEASE
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.12

Frequently Asked Questions

What is CVE-2026-31800?
CVE-2026-31800 is a security vulnerability in Parse Server involving Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class routes under CWE-862: Missing Authorization.
Which Parse Server versions are affected?
Affected versions include releases prior to 9.5.2-alpha.12, 8.6.25 across affected packages: parse-server.
What version fixes CVE-2026-31800?
Upgrading to 9.5.2-alpha.12, 8.6.25 (or the latest patched release for your respective branch) resolves the vulnerability.
Is parse-server affected?
Yes, parse-server is affected in releases prior to 9.5.2-alpha.12, 8.6.25. Upgrade your dependency to 9.5.2-alpha.12, 8.6.25 or later.
What CWE is associated with CVE-2026-31800?
CVE-2026-31800 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check npm dependencies for CVE-2026-31800?
Run the dependency tree command: 'npm ls parse-server'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7xg7-rqf6-pw6c",
  "modified" : "2026-03-11T00:23:01Z",
  "published" : "2026-03-11T00:23:01Z",
  "aliases" : [ "CVE-2026-31800" ],
  "summary" : "Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class routes",
  "details" : "### Impact\n\nThe `_GraphQLConfig` and `_Audience` internal classes can be read, modified, and deleted via the generic `/classes/_GraphQLConfig` and `/classes/_Audience` REST API routes without master key authentication. This bypasses the master key enforcement that exists on the dedicated `/graphql-config` and `/push_audiences` endpoints. An attacker can read, modify and delete GraphQL configuration and push audience data.\n\n### Patches\n\nThe fix adds the affected internal classes to the `classesWithMasterOnlyAccess` list, ensuring that the generic `/classes/` routes enforce master key access consistently with the dedicated endpoints.\n\n### Workarounds\n\nThere is no known workaround.\n\n### References\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-7xg7-rqf6-pw6c\n- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.12\n- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.25",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
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      "name" : "parse-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0-alpha.1"
      }, {
        "fixed" : "9.5.2-alpha.12"
      } ]
    } ]
  }, {
    "package" : {
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    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "8.6.25"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/parse-community/parse-server/security/advisories/GHSA-7xg7-rqf6-pw6c"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31800"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/parse-community/parse-server"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/parse-community/parse-server/releases/tag/8.6.25"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.12"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-11T00:23:01Z",
    "nvd_published_at" : "2026-03-10T21:16:49Z"
  }
}