CVE-2026-32742: 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.17 and 8.6.42, an authenticated…

PriorityP427medium4.3CVSS 3.1

AVNACLPRLUINSUCNILAN

EPSS

0.31%

22.2th percentile

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.17 and 8.6.42, an authenticated user can overwrite server-generated session fields (`sessionToken`, `expiresAt`, `createdWith`) when creating a session object via `POST /classes/_Session`. This allows bypassing the server's session expiration policy by setting an arbitrary far-future expiration date. It also allows setting a predictable session token value. Starting in version 9.6.0-alpha.17 and 8.6.42, the session creation endpoint filters out server-generated fields from user-supplied data, preventing them from being overwritten. As a workaround, add a `beforeSave` trigger on the `_Session` class to validate and reject or strip any user-supplied values for `sessionToken`, `expiresAt`, and `createdWith`.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
parse-community	parse-server	< 8.6.42	8.6.42
parse-community	parse-server	—	—
parse-community	parse-server	>= 0 < 8.6.42	8.6.42
parse-community	parse-server	>= 9.0.0 < 9.6.0-alpha.17	9.6.0-alpha.17
parseplatform	parse-server	< 8.6.42	8.6.42
parseplatform	parse-server	—	—
parseplatform	parse-server	>= 9.0.0 < 9.6.0	9.6.0

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