Parse Server vulnerable to SQL injection via `Increment` operation on nested object field in PostgreSQL
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 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.
Patches
The fix adds type validation to reject non-number values and parameterizes the value in the SQL query instead of interpolating it.
Workarounds
There is no known workaround.
References
- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.29
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | parse-server | >= 9.0.0-alpha.1, < 9.6.0-alpha.3, < 8.6.29 | 9.6.0-alpha.3, 8.6.29 |
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-q3vj-96h2-gwvg
- https://nvd.nist.gov/vuln/detail/CVE-2026-31856
- https://github.com/parse-community/parse-server
- https://github.com/parse-community/parse-server/releases/tag/8.6.29
- https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.3
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-89- Platform
- npm
- Package
parse-server- Disclosed
- 11.03.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q3vj-96h2-gwvg - CC BY 4.0
Vulnerability history: parse-server
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 116
- First → latest
- 06.2019 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 17
- High 49
- Medium 40
- Low 10
Disclosures per year
- 2019: 2
- 2020: 4
- 2021: 4
- 2022: 12
- 2023: 5
- 2024: 4
- 2025: 6
- 2026: 79
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Parse Server vulnerable to SQL injection via `Increment` operation on nested object field in PostgreSQL this entry
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