CVE-2026-31800 — Vulnerability in parse-server — CVE Details

HIGH

Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class routes

Published March 11, 2026Updated March 14, 2026Source: osv

Summary

### 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

Advisory Timeline

First published March 11, 2026 (216 days ago).
Last revised March 14, 2026 — 3 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm

Update parse-server to 9.5.2-alpha.12 or later

npm install parse-server@9.5.2-alpha.12

npm

Update parse-server to 8.6.25 or later

npm install parse-server@8.6.25

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: npm (1).

Package	Ecosystem	Affected	Fixed In
parse-server	npm	All versions	9.5.2-alpha.12
parse-server	npm	All versions	8.6.25

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-862
Missing AuthorizationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.6 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

—

Confidentiality

—

Integrity

—

Availability

—

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

References

Frequently Asked Questions

What is CVE-2026-31800?: Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class routes This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.6/10).
How do I check if my project is affected by CVE-2026-31800?: CVE-2026-31800 affects parse-server. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-31800 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

8.6

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-7xg7-rqf6-pw6c

BIT-parse-2026-31800

Related CVEs

CVE-2026-30965
CRITICAL
Parse Server vulnerable to session token exfiltration via `redirectClassNameForKey` query parameter
CVE-2024-39309
CRITICAL
ZDI-CAN-23894: Parse Server literalizeRegexPart SQL Injection Authentication Bypass Vulnerability
CVE-2026-31871
CRITICAL
Parse Server vulnerable to SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL
CVE-2022-39396
CRITICAL
Remote code execution via MongoDB BSON parser through prototype pollution
CVE-2026-31856
CRITICAL
Parse Server vulnerable to SQL injection via `Increment` operation on nested object field in PostgreSQL
CVE-2026-31840
CRITICAL
Parse Server: SQL injection via dot-notation field name in PostgreSQL
CVE-2026-30948
HIGH
Parse Server vulnerable to stored cross-site scripting (XSS) via SVG file upload
CVE-2026-33409
HIGH
Parse Server has an auth provider validation bypass on login via partial authData

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies