parse-community parse-server up to 8.6.27/9.0.0 9.6.0-alpha.1 Query Parameter sql injection

Summaryinfo

A vulnerability marked as critical has been reported in parse-community parse-server up to 8.6.27/9.0.0 9.6.0-alpha.1. Impacted is an unknown function of the component Query Parameter Handler. Performing a manipulation results in sql injection. This vulnerability is reported as CVE-2026-31840. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in parse-community parse-server up to 8.6.27/9.0.0 9.6.0-alpha.1. This affects an unknown code of the component Query Parameter Handler. The manipulation with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.2 and 8.6.28, an attacker can use a dot-notation field name in combination with the sort query parameter to inject SQL into the PostgreSQL database through an improper escaping of sub-field values in dot-notation queries. The vulnerability may also affect queries that use dot-notation field names with the distinct and where query parameters. This vulnerability only affects deployments using a PostgreSQL database. This vulnerability is fixed in 9.6.0-alpha.2 and 8.6.28.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-31840 since 03/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

Upgrading to version 8.6.28 or 9.0.0 9.6.0-alpha.2 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Vendor

• parse-community

Name

• parse-server

Version

• 8.6.0
• 8.6.1
• 8.6.2
• 8.6.3
• 8.6.4
• 8.6.5
• 8.6.6
• 8.6.7
• 8.6.8
• 8.6.9
• 8.6.10
• 8.6.11
• 8.6.12
• 8.6.13
• 8.6.14
• 8.6.15
• 8.6.16
• 8.6.17
• 8.6.18
• 8.6.19
• 8.6.20
• 8.6.21
• 8.6.22
• 8.6.23
• 8.6.24
• 8.6.25
• 8.6.26
• 8.6.27
• 9.0.0 9.6.0-alpha.0
• 9.0.0 9.6.0-alpha.1

Website

• Product: https://github.com/parse-community/parse-server/

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