Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.
CVE-2026-102673
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-102673
electron
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "electron",
"product": "electron",
"versions": [
{
"status": "affected",
"version": "< 41.10.4"
},
{
"status": "affected",
"version": ">= 42.0.0-alpha.1, < 42.5.2"
},
{
"status": "affected",
"version": ">= 43.0.0-alpha.1, < 43.0.0"
}
]
}
]- Related CVEs
- CVE-2026-102673
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4892 · Revision 1
- Added to Heist Feed
- Publisher date