CVE-2026-33539: SQL Injection Vulnerability in Parse Server PostgreSQL Adapter
Summary
CVE-2026-33539: Parse Server has SQL Injection through aggregate and distinct field names in PostgreSQL adapter. Affects parse-server across 2 version ranges.
< 8.6.59
>= 9.0.0, < 9.6.0-alpha.53
Fixed in 8.6.59 or 9.6.0-alpha.53, depending on the release line you run. How to fix ↓
Also tracked for
- parse · Bitnami
The same CVE-2026-33539 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Parse Server is an open-source backend framework that enables developers to build applications with a scalable and flexible server-side architecture. It provides features such as data storage, user management, and real-time notifications. The PostgreSQL adapter allows Parse Server to interact with PostgreSQL databases, but it has recently been identified as vulnerable to SQL injection attacks, specifically through the misuse of aggregate and distinct field names.
Vulnerability Detail
The vulnerability arises from the ability of an attacker with master key access to inject SQL metacharacters into field name parameters of the aggregate $group pipeline stage or the distinct operation. This can lead to the execution of arbitrary SQL statements on the PostgreSQL database, allowing for privilege escalation from the application-level administrator to database-level access. The vulnerability specifically affects Parse Server deployments using PostgreSQL, while those using MongoDB remain unaffected.
How To Fix
Latest published version: 9.10.5 as of 22 Oct 2026
npm install parse-server@9.10.5Upgrading to it may include breaking changes; the versions below are the minimum fixed release for this vulnerability.
If you can't move to the latest
The minimum fixed version depends on the release line you run.
-
< 8.6.598.6.59npm install parse-server@8.6.59 -
>= 9.0.0, < 9.6.0-alpha.539.6.0-alpha.53npm install parse-server@9.6.0-alpha.53
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Workaround
There are no workarounds available for this vulnerability. The only effective solution is to upgrade to a patched version of Parse Server.
Conclusion
The SQL injection vulnerability in the Parse Server PostgreSQL adapter poses significant risks to applications using this framework. It is crucial for developers to upgrade to the patched versions to mitigate potential attacks and safeguard their databases.
See every vulnerability recorded for parse-server →
FAQ
CVE-2026-33539 is a vulnerability in the Parse Server PostgreSQL adapter that allows SQL injection through improperly validated field names.
Only Parse Server deployments using PostgreSQL are affected. Deployments using MongoDB are not impacted.
An attacker can escalate privileges from application-level access to database-level access, potentially compromising sensitive data.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability without any signup.
The CVSS score of this vulnerability is 8.6, indicating a high severity level.
References
Related vulnerabilities
Recent vulnerabilities recorded for parse-server.
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