Incorrect Authorization Affecting parse-server package, versions <8.6.16>=9.0.0-alpha.1 <9.5.2-alpha.3
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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- published12 Mar 2026
- disclosed11 Mar 2026
- creditrestriction
Introduced: 11 Mar 2026
NewCVE-2026-30947 (opens in a new tab)How to fix?
Upgrade parse-server to version 8.6.16, 9.5.2-alpha.3 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 Incorrect Authorization in LiveQuery. An attacker can gain unauthorized access to sensitive data by subscribing to real-time events for any class, regardless of permission restrictions.
Note: This is only exploitable if LiveQuery is enabled for classes with class-level permissions.
Workaround
This vulnerability can be mitigated by disabling LiveQuery for classes that use class-level permissions by removing them from the liveQuery.classNames server configuration.