Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. A SQL injection vulnerability exists in the PostgreSQL storage adapter when processing Increment operations on nested object fields using dot notation (e.g., stats.counter). The amount value is interpolated directly into the SQL query without parameterization or type validation. An attacker who can send write requests to the Parse Server REST API can inject arbitrary SQL subqueries to read any data from the database, bypassing CLPs and ACLs. MongoDB deployments are not affected. This vulnerability is fixed in 9.6.0-alpha.3 and 8.6.29.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.29 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/releases/tag/8.6.29ProductRelease Notes
- https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3ProductRelease Notes
- https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96PatchVendor Advisory
FAQ
What is CVE-2026-31856?
CVE-2026-31856 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. A SQL injection vulnerability exists in the PostgreSQL storage adapter when processing Increment...
How severe is CVE-2026-31856?
CVE-2026-31856 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-31856?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.