CVE-2026-70607
Electron: window.open features string controls some window options considered privileged
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmelectronGHSA-v93f-fgjr-hjrj (opens in a new tab)
References (13)
- https://github.com/electron/electron/security/advisories/GHSA-v93f-fgjr-hjrj (opens in a new tab)x_refsource_CONFIRM
- https://github.com/electron/electron/pull/50946 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/pull/50947 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/pull/50948 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/pull/50949 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/commit/30cf3882de75ee651bd4e5f27002f13fd3d3163a (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/commit/4eff3dc09e4d1e62d649c5ce9902f532bb7469c7 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/commit/615d62500fc7732d068274b796c49487e652e90b (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/commit/fe2e7d0073949b4593b624b93abf1788f5377e55 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v39.8.8 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v40.9.0 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v41.2.1 (opens in a new tab)x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v42.0.0-beta.3 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-v93f-fgjr-hjrj (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-70607)Record last updated .