CVE-2026-31856— Parse Server has a SQL injection via `Increment` operation on nested object field in PostgreSQL
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I. Basic Information for CVE-2026-31856
Vulnerability Information
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Vulnerability Title
Parse Server has a SQL injection via `Increment` operation on nested object field in PostgreSQL
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Parse Server SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Parse Server是Parse Platform开源的一个开源后端，可以部署到任何可以运行 Node.js 的基础设施。 Parse Server 9.6.0-alpha.3之前版本和8.6.29之前版本存在SQL注入漏洞，该漏洞源于PostgreSQL存储适配器对Increment操作处理不当，可能导致SQL注入攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| parse-community | parse-server | >= 9.0.0 < 9.6.0-alpha.3 | - |
II. Public POCs for CVE-2026-31856
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|---|
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- Release 8.6.29 · parse-community/parse-server · GitHubx_refsource_MISC
- Release 9.6.0-alpha.3 · parse-community/parse-server · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-31856
Same Patch Batch · parse-community · 2026-03-11 · 9 CVEs total
| CVE-2026-31840 | Parse Server has a SQL injection via dot-notation field name in PostgreSQL | |
| CVE-2026-31872 | Parse Server has a protected fields bypass via dot-notation in query and sort | |
| CVE-2026-31871 | Parse Server has a SQL Injection via dot-notation sub-key name in `Increment` operation on | |
| CVE-2026-31875 | Parse Server MFA recovery codes not consumed after use | |
| CVE-2026-31868 | Parse Server has Stored XSS via file upload of HTML-renderable file types | |
| CVE-2026-32234 | Parse Server has a SQL injection via query field name when using PostgreSQL | |
| CVE-2026-32098 | Parse Server has a protected fields bypass via LiveQuery subscription WHERE clause | |
| CVE-2026-31901 | Parse Server has user enumeration via email verification endpoint |
IV. Related Vulnerabilities
Same product: parse-server
- CVE-2026-39381
Parse Server's Endpoint `/sessions/me` bypasses `_Session` ` - CVE-2026-39321
Parse Server has a login timing side-channel reveals user ex - CVE-2026-35200
Parse Server has a file upload Content-Type override via ext - CVE-2026-34784
Parse Server: Streaming file download bypasses afterFind fil - CVE-2026-34215
Parse Server: Auth data exposed via verify password endpoint
Same vendor: parse-community
- CVE-2026-39381
Parse Server's Endpoint `/sessions/me` bypasses `_Session` ` - CVE-2026-39321
Parse Server has a login timing side-channel reveals user ex - CVE-2026-35200
Parse Server has a file upload Content-Type override via ext - CVE-2026-34784
Parse Server: Streaming file download bypasses afterFind fil - CVE-2026-34215
Parse Server: Auth data exposed via verify password endpoint
Same weakness: CWE-89
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V. Comments for CVE-2026-31856
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