Electron: window.open features string controls some window options considered privileged
Summary
| CVE | CVE-2026-70607 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-05 17:16:54 UTC |
| Updated | 2026-08-05 19:17:39 UTC |
| Description | Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths, when untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler or overrideBrowserWindowOptions. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3. |
Risk And Classification
Primary CVSS: v3.1 5.3 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Problem Types: CWE-20 | CWE-20 CWE-20: Improper Input Validation
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| 3.1 | CNA | DECLARED | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
LowIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Electron | Electron | affected < 39.8.8 | Not specified |
| CNA | Electron | Electron | affected >= 40.0.0-alpha.1, < 40.9.0 | Not specified |
| CNA | Electron | Electron | affected >= 41.0.0-alpha.1, < 41.2.1 | Not specified |
| CNA | Electron | Electron | affected >= 42.0.0-alpha.1, < 42.0.0-beta.3 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/electron/electron/commit/30cf3882de75ee651bd4e5f27002f13fd3d3... | [email protected] | github.com | |
| github.com/electron/electron/security/advisories/GHSA-v93f-fgjr-hjrj | [email protected] | github.com | |
| github.com/electron/electron/commit/4eff3dc09e4d1e62d649c5ce9902f532bb74... | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v41.2.1 | [email protected] | github.com | |
| github.com/electron/electron/pull/50947 | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v39.8.8 | [email protected] | github.com | |
| github.com/electron/electron/commit/fe2e7d0073949b4593b624b93abf1788f537... | [email protected] | github.com | |
| github.com/electron/electron/pull/50948 | [email protected] | github.com | |
| github.com/electron/electron/pull/50949 | [email protected] | github.com | |
| github.com/electron/electron/commit/615d62500fc7732d068274b796c49487e652... | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v42.0.0-beta.3 | [email protected] | github.com | |
| github.com/electron/electron/pull/50946 | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v40.9.0 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.