GHSA-p2rr-rvmm-c5fp

Suggest an improvement
Source
https://github.com/advisories/GHSA-p2rr-rvmm-c5fp
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-p2rr-rvmm-c5fp/GHSA-p2rr-rvmm-c5fp.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-p2rr-rvmm-c5fp
Aliases
Published
2026-08-05T17:56:50Z
Modified
2026-08-05T18:11:04Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Electron: Sandboxed iframes can launch external protocol handlers
Details

Impact

Requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame's sandbox state was also not made available to the app's permission handlers.

Apps are only affected if they render untrusted content in sandboxed iframes and grant the openExternal permission (granted by default when no setPermissionRequestHandler is installed). Apps whose permission handler denies openExternal for untrusted content are not affected.

Workarounds

Install a setPermissionRequestHandler that denies the openExternal permission for untrusted content.

Fixed Versions

  • 42.0.0-beta.3
  • 41.2.1
  • 40.9.0
  • 39.8.8

For more information

If you have any questions or comments about this advisory, email Electron at security@electronjs.org

Database specific 
{
    "cwe_ids": [
        "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-05T17:56:50Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
}
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
0 Unknown introduced version / All previous versions are affected
Fixed
39.8.8

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-p2rr-rvmm-c5fp/GHSA-p2rr-rvmm-c5fp.json"

npm / electron

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
40.0.0-alpha.1
Fixed
40.9.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-p2rr-rvmm-c5fp/GHSA-p2rr-rvmm-c5fp.json"

npm / electron

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
41.0.0-alpha.1
Fixed
41.2.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-p2rr-rvmm-c5fp/GHSA-p2rr-rvmm-c5fp.json"

npm / electron

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
42.0.0-alpha.1
Fixed
42.0.0-beta.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-p2rr-rvmm-c5fp/GHSA-p2rr-rvmm-c5fp.json"