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CVE

CVE-2026-31871

Parse Server has a SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL
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CVE

CVE-2026-31871

Parse Server has a SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31871.json, 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://nvd.nist.gov/vuln/detail/CVE-2026-31871

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0.00028%
EPSS Percentile
0.07707%
Introduced Version
0
Fix Available
44d6ff4d4f0562f3845cf0a5b5434be1afa5aadd,27add6d03bf595ac34ed5b57110629044c25892d

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