CVE-2026-31871
Parse Server vulnerable to SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL
Impact
### Impact 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. ### Patches The fix escapes single quotes in the sub-key name before interpolating it into the SQL query, preventing breakout from SQL string literals. ### Workarounds There is no known workaround. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-gqpp-xgvh-9h7h - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.5 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.31
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0-alpha.1, < 9.6.0-alpha.5 | 9.6.0-alpha.5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Parseplatform | Parse-Server | before 8.6.31 from 9.0.0 before 9.6.0 Version 9.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/parse-community/parse-server/releases/tag/8.6.31
- https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.5
- https://github.com/parse-community/parse-server/security/advisories/GHSA-gqpp-xgvh-9h7h
- https://github.com/advisories/GHSA-gqpp-xgvh-9h7h
- https://nvd.nist.gov/vuln/detail/CVE-2026-31871