Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.
CVE-2026-102677
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-2026-102677
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": ">= 42.3.3, < 42.10.0"
},
{
"status": "affected",
"version": ">= 43.0.0-beta.1, < 43.5.0"
},
{
"status": "affected",
"version": ">= 44.0.0-alpha.1, < 44.0.0-beta.6"
}
]
}
]- Related CVEs
- CVE-2026-102677
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #7895 · Revision 1
- Added to Heist Feed
- Publisher date