SES safely executes third-party JavaScript 'strict' mode programs in compartments that have no excess authority in their global scope. Prior to version 1.12.0, web pages and web extensions using `ses` and the Compartment API to evaluate third-party code in an isolated execution environment that have also elsewhere used `const`, `let`, and `class` bindings in the top-level scope of a `<script>` tag will have inadvertently revealed these bindings in the lexical scope of third-party code. This issue has been patched in version 1.12.0. Workarounds for this issue involve either avoiding top-level `let`, `const`, or `class` bindings in `<script>` tags, or change these to `var` bindings to be reflected on `globalThis`.
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Mon, 21 Apr 2025 14:15:00 +0000
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Fri, 18 Apr 2025 16:15:00 +0000
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Description | SES safely executes third-party JavaScript 'strict' mode programs in compartments that have no excess authority in their global scope. Prior to version 1.12.0, web pages and web extensions using `ses` and the Compartment API to evaluate third-party code in an isolated execution environment that have also elsewhere used `const`, `let`, and `class` bindings in the top-level scope of a `<script>` tag will have inadvertently revealed these bindings in the lexical scope of third-party code. This issue has been patched in version 1.12.0. Workarounds for this issue involve either avoiding top-level `let`, `const`, or `class` bindings in `<script>` tags, or change these to `var` bindings to be reflected on `globalThis`. | |
Title | ses's global contour bindings leak into Compartment lexical scope | |
Weaknesses | CWE-497 | |
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Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-04-21T13:28:59.847Z
Reserved: 2025-04-10T12:51:12.281Z
Link: CVE-2025-32792

Updated: 2025-04-21T13:28:53.588Z

Status : Awaiting Analysis
Published: 2025-04-18T16:15:23.487
Modified: 2025-04-21T14:23:45.950
Link: CVE-2025-32792

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