GHSA-qmv3-fv6v-rmhq

Suggest an improvement
Source
https://github.com/advisories/GHSA-qmv3-fv6v-rmhq
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-qmv3-fv6v-rmhq/GHSA-qmv3-fv6v-rmhq.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-qmv3-fv6v-rmhq
Aliases
Published
2026-09-29T18:02:01Z
Modified
2026-09-29T18:15:05Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
Details

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

Database specific 
{
    "cwe_ids":  [
        "CWE-20",
        "CWE-345"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-29T18:02:01Z",
    "nvd_published_at":  null,
    "severity":  "HIGH"
}
References

Affected packages

npm / electron

Package

Name
electron
View open source insights on deps.dev
Purl
pkg:npm/electron

Affected ranges

Type
SEMVER
Events
Introduced
42.3.3
Fixed
42.10.0

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"

npm / electron

Package

Name
electron
View open source insights on deps.dev
Purl
pkg:npm/electron

Affected ranges

Type
SEMVER
Events
Introduced
43.0.0-beta.1
Fixed
43.5.0

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"

npm / electron

Package

Name
electron
View open source insights on deps.dev
Purl
pkg:npm/electron

Affected ranges

Type
SEMVER
Events
Introduced
44.0.0-alpha.1
Fixed
44.0.0-beta.6

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"