Vulnerability · Published Apr 18, 2025 · Assigned by GitHub_M

CVE-2025-32792ses's global contour bindings leak into Compartment lexical scope

High 8.7

In plain English

A high-severity security flaw in endo from endojs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.6%top 51.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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`.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ses	1.12.0	GHSA-h9w6-f932-gq62

Affected products (as reported)

Vendor	Product	Versions
endojs	endo	< 1.12.0

Weakness: CWE-497 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/endojs/endo/security/advisories/GHSA-h9w6-f932-gq62 x_refsource_CONFIRM