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TI-2025-23829 Aliases CVE-2025-32792GHSA-h9w6-f932-gq62

ses's global contour bindings leak into Compartment lexical scope

Priority MEDIUM 44CWE-497Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-497.

Summary

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`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00587 48th percentileScored 2026-11-07
Fix Fixed endo (endojs): 1.12.0ses (npm): 1.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
endojsendobefore 1.12.01.12.0Patch availableCNA
—ses (npm)before 1.12.01.12.0Patch availableGHSA-h9w6-f932-gq62
  • endo Vendorendojs Affected before 1.12.0 Fixed in 1.12.0 Patch available CNA
  • ses (npm) Vendor— Affected before 1.12.0 Fixed in 1.12.0 Patch available GHSA-h9w6-f932-gq62

Remediation

  • Fix · CNA endo (endojs) Fixed in 1.12.0
  • Fix · GHSA-h9w6-f932-gq62 ses (npm) Fixed in 1.12.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-32792
  2. 2026-10-03 Alias added: GHSA-h9w6-f932-gq62

References

Advisory 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences