Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
### Impact The cache Electron keeps for sandboxed preload scripts did not verify that a cached entry matched the preload it was served for. A compromised renderer could use this to run its own code in the preload context on a later load. Apps are only affected if they load untrusted content. Apps that do not load untrusted content are not affected. ### Workarounds There are no app side workarounds, you must update to a patched version of Electron. ### Fixed Versions * `44.0.0-beta.6` * `43.5.0 ` * `42.10.0` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)
GHSA-qmv3-fv6v-rmhq
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: osv:GHSA-qmv3-fv6v-rmhq
electron
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 42.10.0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
electron
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 43.5.0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
electron
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 44.0.0-beta.6
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "42.3.3"
},
{
"fixed": "42.10.0"
}
]
}
],
"package": {
"name": "electron",
"purl": "pkg:npm/electron",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-qmv3-fv6v-rmhq/GHSA-qmv3-fv6v-rmhq.json"
}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "43.0.0-beta.1"
},
{
"fixed": "43.5.0"
}
]
}
],
"package": {
"name": "electron",
"purl": "pkg:npm/electron",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-qmv3-fv6v-rmhq/GHSA-qmv3-fv6v-rmhq.json"
}
},
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "44.0.0-alpha.1"
},
{
"fixed": "44.0.0-beta.6"
}
]
}
],
"package": {
"name": "electron",
"purl": "pkg:npm/electron",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-qmv3-fv6v-rmhq/GHSA-qmv3-fv6v-rmhq.json"
}
}
]- Related CVEs
- CVE-2026-102677
Source reference:
/aliases
Publisher severity
high
Source reference: /database_specific/severity
- Event
- #29756 · Revision 1
- Added to Heist Feed
- Publisher date