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CVE-2026-31840

CRITICAL

Parse Server: SQL injection via dot-notation field name in PostgreSQL

Published March 10, 2026Updated March 13, 2026Source: osv

Summary

### Impact An attacker can use a dot-notation field name in combination with the `sort` query parameter to inject SQL into the PostgreSQL database through an improper escaping of sub-field values in dot-notation queries. The vulnerability may also affect queries that use dot-notation field names with the `distinct` and `where` query parameters. This vulnerability only affects deployments using a PostgreSQL database. ### Patches The fix escapes characters in dot-notation sub-field values that could allow a SQL breakout. ### Workarounds There is no known workaround. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-qpr4-jrj4-6f27 - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.2 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.28

Remediation

Upgrade to the fixed version using your package manager.

npm
Update parse-server to 9.6.0-alpha.2 or later
npm install parse-server@9.6.0-alpha.2
npm
Update parse-server to 8.6.28 or later
npm install parse-server@8.6.28

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

PackageEcosystemAffectedFixed In
parse-server
npm
All versions9.6.0-alpha.2
parse-server
npm
All versions8.6.28

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

Frequently Asked Questions

What is CVE-2026-31840?
Parse Server: SQL injection via dot-notation field name in PostgreSQL This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-31840?
CVE-2026-31840 affects parse-server. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-31840 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-qpr4-jrj4-6f27
BIT-parse-2026-31840

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