CVE-2026-31856
CRITICAL
GHSA-q3vj-96h2-gwvg
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
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.
Analysis
SQL injection in Parse Server before 9.6.0-alpha.5/8.6.31.
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Remediation
Within 24 hours: Isolate affected Parse Server instances from production traffic or disable Increment operations on nested object fields; inventory all Parse Server deployments using PostgreSQL; notify security and development teams. Within 7 days: Implement WAF rules to block malicious Increment payloads with dot notation; apply network segmentation to restrict database access; conduct forensic logs review for exploitation attempts. …
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External POC / Exploit Code
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