CVE-2026-31872
March 11, 2026
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.6 and 8.6.32, the protectedFields class-level permission (CLP) can be bypassed using dot-notation in query WHERE clauses and sort parameters. An attacker can use dot-notation to query or sort by sub-fields of a protected field, enabling a binary oracle attack to enumerate protected field values. This affects both MongoDB and PostgreSQL deployments. This vulnerability is fixed in 9.6.0-alpha.6 and 8.6.32.
Affected Packages
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=8.0.0 <8.6.32Fix Suggestion:
Update to version 8.6.32https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0-alpha.1 <9.6.0-alpha.6Fix Suggestion:
Update to version 9.6.0-alpha.6parse-server (NPM):
Affected version(s) >=1.0.0 <8.6.32Fix Suggestion:
Update to version 8.6.32parse-server (NPM):
Affected version(s) >=9.0.0-alpha.1 <9.6.0-alpha.6Fix Suggestion:
Update to version 9.6.0-alpha.6Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Access Control
EPSS
Base Score:
0.03
