Declaration of Variable with Unnecessarily Wide Scope Affecting ses package, versions <1.12.0
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-SES-9788070
- published20 Apr 2025
- disclosed18 Apr 2025
- creditmingijunggrape
Introduced: 18 Apr 2025
NewCVE-2025-32792 (opens in a new tab)How to fix?
Upgrade ses to version 1.12.0 or higher.
Overview
ses is a secure runtime for running third-party code safely.
Affected versions of this package are vulnerable to Declaration of Variable with Unnecessarily Wide Scope when using the Compartment API. If there are const, let, or class bindings in the top-level scope of a <script> tag, they are leaked into the global scope and can be accessed outside the isolated execution environment.
Workaround
This vulnerability can be mitigated by changing the vulnerable top-level bindings to var bindings, to be reflected on globalThis.