Vulnerability Description
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.5 and 8.6.31, 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 sub-key name is interpolated directly into SQL string literals without escaping. An attacker who can send write requests to the Parse Server REST API can inject arbitrary SQL via a crafted sub-key name containing single quotes, potentially executing commands or reading data from the database, bypassing CLPs and ACLs. Only Postgres deployments are affected. This vulnerability is fixed in 9.6.0-alpha.5 and 8.6.31.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.31 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/releases/tag/8.6.31ProductRelease Notes
- https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.5ProductRelease Notes
- https://github.com/parse-community/parse-server/security/advisories/GHSA-gqpp-xgPatchVendor Advisory
FAQ
What is CVE-2026-31871?
CVE-2026-31871 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. Prior to 9.6.0-alpha.5 and 8.6.31, a SQL injection vulnerability exists in the PostgreSQL storag...
How severe is CVE-2026-31871?
CVE-2026-31871 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-2026-31871?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.