GHSA-hq2x-r82h-9wj4

Source

https://github.com/advisories/GHSA-hq2x-r82h-9wj4

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-hq2x-r82h-9wj4

Aliases

CVE-2026-102673

Published

2026-09-29T18:05:34Z

Modified

2026-09-29T18:15:04Z

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N CVSS Calculator

Summary

Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab

Details

Impact

Popups opened from a sandboxed iframe through a link (for example target="_blank" or a middle-click) did not inherit the iframe's HTML sandbox restrictions. Content that was meant to run sandboxed could open a popup with the embedding app's full origin, gaining access to that origin's cookies, storage, and same-origin scripting.

Apps are only affected if they embed untrusted content in iframes sandboxed with allow-scripts allow-popups. Apps that do not embed untrusted content in sandboxed iframes are not affected.

Workarounds

Use setWindowOpenHandler on the parent WebContents to deny or constrain popups opened from sandboxed frames, or do not apply allow-popups to sandboxed iframes that render untrusted content.

Fixed Versions

43.0.0
42.5.2
41.10.4

For more information

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

Database specific

{
    "cwe_ids":  [
        "CWE-346",
        "CWE-693"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-29T18:05:34Z",
    "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

0 Unknown introduced version / All previous versions are affected

Fixed

41.10.4

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.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

42.5.2

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.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-alpha.1

Fixed

43.0.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hq2x-r82h-9wj4/GHSA-hq2x-r82h-9wj4.json"