What’s Vulnerable › Vulnerabilities

CVE-2026-31800: Parse Server: Classes `_GraphQLConfig` and `_Audience` master key bypass via generic class routes

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-10 · updated 2026-06-17
• Weakness: CWE-862

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.12 and 8.6.25, 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. This vulnerability is fixed in 9.5.2-alpha.12 and 8.6.25.

Affected products

• parse-community parse-server: before 8.6.25; from 9.0.0 before 9.5.2; 9.5.2-alpha1, 9.5.2-alpha10, 9.5.2-alpha11, 9.5.2-alpha2, 9.5.2-alpha3, 9.5.2-alpha4 (+5) — fixed in 8.6.25, 9.5.2

How to fix

Upgrade to a fixed version: parse-community parse-server 8.6.25, 9.5.2. Check the vendor advisory for mitigations.

References

• https://github.com/parse-community/parse-server/releases/tag/8.6.25
• https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.12
• https://github.com/parse-community/parse-server/security/advisories/GHSA-7xg7-rqf6-pw6c

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