Improperly Controlled Modification of Dynamically-Determined Object Attributes Affecting parse-server package, versions <8.6.42>=9.0.0-alpha.1 <9.6.0-alpha.17
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published18 Mar 2026
- disclosed17 Mar 2026
- creditUnknown
Introduced: 17 Mar 2026
NewCVE-2026-32742 (opens in a new tab)How to fix?
Upgrade parse-server to version 8.6.42, 9.6.0-alpha.17 or higher.
Overview
parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js.
Affected versions of this package are vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes via the POST /classes/_Session endpoint. An attacker can manipulate server-generated session fields such as sessionToken, expiresAt, and createdWith by supplying crafted values, potentially bypassing session expiration policies and setting predictable session tokens.
Workaround
This vulnerability can be mitigated by adding a beforeSave trigger on the _Session class to validate and reject or strip any user-supplied values for sessionToken, expiresAt, and createdWith.