Origin Validation Error Affecting @elysiajs/cors package, versions <1.3.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-ELYSIAJSCORS-12084816
- published21 Aug 2025
- disclosed20 Aug 2025
- creditUnknown
Introduced: 20 Aug 2025
NewCVE-2025-50864 (opens in a new tab)How to fix?
Upgrade @elysiajs/cors to version 1.3.1 or higher.
Overview
@elysiajs/cors is a Plugin for Elysia that for Cross Origin Requests (CORs)
Affected versions of this package are vulnerable to Origin Validation Error via improper validation in the processOrigin function. An attacker can gain unauthorized access to user data by supplying a malicious origin that is a substring of an allowed domain, thereby bypassing intended access restrictions.