CVE-2026-33527
March 24, 2026
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generated session fields such as expiresAt and createdWith when updating their own session via the REST API. This allows bypassing the server's configured session lifetime policy, making a session effectively permanent. This issue has been patched in versions 8.6.57 and 9.6.0-alpha.48.
Affected Packages
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=2.0.0 <8.6.57Fix Suggestion:
Update to version 8.6.57https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0 <9.6.0-alpha.48Fix Suggestion:
Update to version 9.6.0-alpha.48https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=2.0.0 <8.6.57Fix Suggestion:
Update to version 8.6.57https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=2.0.0 <8.6.57Fix Suggestion:
Update to version 8.6.57https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0 <9.6.0-alpha.48Fix Suggestion:
Update to version 9.6.0-alpha.48https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0 <9.6.0-alpha.48Fix Suggestion:
Update to version 9.6.0-alpha.48parse-server (NPM):
Affected version(s) >=9.0.0 <9.6.0-alpha.48Fix Suggestion:
Update to version 9.6.0-alpha.48parse-server (NPM):
Affected version(s) >=1.0.0 <8.6.57Fix Suggestion:
Update to version 8.6.57Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.01
