CVE-2026-102674CWE-266CWE-693

CVE-2026-102674

High · published September 29, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
13.7
In the wild
Unconfirmed
What it is

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, windows opened from a sandboxed top-level document did not inherit that document's active HTML sandbox restrictions. Untrusted content in a sandboxed top-level document that was permitted to open popups could therefore create a window with the Electron application's full origin instead of the restricted origin intended by the sandbox. Applications that deny such popups with setWindowOpenHandler are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00236 · 13.7th percentile
Weaknesses
CWE-266 · Incorrect Privilege Assignment; CWE-693 · Protection Mechanism Failure
Published
2026-09-29T21:17Z
Affected products (16)
ProductVersionsFixed in
electronjs/electron< 41.10.641.10.6
electronjs/electron≥ 42.0.0, < 42.9.242.9.2
electronjs/electron≥ 43.0.0, < 43.4.143.4.1
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
electronjs/electronall versions—
References (9)
https://github.com/electron/electron/commit/29fc130569f970e91e355383821a4af0f25724a2 · [email protected]https://github.com/electron/electron/commit/3ecf3e74f4be6e2360644679b0b4698742be0e1d · [email protected]https://github.com/electron/electron/commit/6594d5a5b074cf501da084dc7908d3df0d68a886 · [email protected]https://github.com/electron/electron/commit/e9c4d3cbe912e18d7c63af78e63e98ae7a48cd3a · [email protected]https://github.com/electron/electron/releases/tag/v41.10.6 · [email protected]https://github.com/electron/electron/releases/tag/v42.9.2 · [email protected]https://github.com/electron/electron/releases/tag/v43.4.1 · [email protected]https://github.com/electron/electron/releases/tag/v44.0.0-beta.5 · [email protected]https://github.com/electron/electron/security/advisories/GHSA-gr2m-v5gq-v685 · [email protected]
EPSS history
Timeline
  • 01 OCT 03:44Z
    EPSS moved — → 0%
    epss
  • 29 SEP 16:51Z
    Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions
    cvelistv5