Improper Isolation or Compartmentalization Affecting parse-server package, versions >=9.0.0 <9.10.5-alpha.4<8.6.103
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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Test your applications- Snyk IDSNYK-JS-PARSESERVER-21708543
- published25 Oct 2026
- disclosed25 Oct 2026
- creditUnknown
Introduced: 25 Oct 2026
NewCVE-2026-116161 (opens in a new tab)How to fix?
Upgrade parse-server to version 9.10.5-alpha.4, 8.6.103 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 Improper Isolation or Compartmentalization via LiveQuery subscriptions that use a $or query, due to a flawed query hashing function in src/LiveQuery/QueryTools.js. The former queryHash implementation flattened $or clauses into a flat list of conditions and discarded surrounding keys (such as the server-injected _Session user pointer and beforeSubscribe constraints) before hashing, causing distinct queries from different users to produce the same hash. As a result, an authenticated attacker can receive LiveQuery events intended for another user, including that user's session tokens.