Origin Validation Error Affecting parse-server package, versions >=3.5.0 <8.6.66>=9.0.0-alpha.1 <9.7.0-alpha.10
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-15855397
- published31 Mar 2026
- disclosed30 Mar 2026
- creditManuel
Introduced: 30 Mar 2026
CVE-2026-34373 (opens in a new tab)How to fix?
Upgrade parse-server to version 8.6.66, 9.7.0-alpha.10 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 Origin Validation Error via the GraphQL API endpoint ignoring the configured CORS allowOrigin restriction. An attacker can interact with the API from unauthorized origins by sending cross-origin requests.