Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102673
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-29 17:17:07 UTC
Updated2026-09-30 21:17:04 UTC
DescriptionElectron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Problem Types: CWE-346 | CWE-693 | CWE-346 CWE-346: Origin Validation Error | CWE-693 CWE-693: Protection Mechanism Failure

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
3.1CNADECLARED8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Electron Electron affected < 41.10.4 Not specified
CNA Electron Electron affected >= 42.0.0-alpha.1, < 42.5.2 Not specified
CNA Electron Electron affected >= 43.0.0-alpha.1, < 43.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee... [email protected] github.com
github.com/electron/electron/releases/tag/v41.10.4 [email protected] github.com
github.com/electron/electron/pull/52133 [email protected] github.com
github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4 [email protected] github.com
github.com/electron/electron/releases/tag/v42.5.2 [email protected] github.com
github.com/electron/electron/releases/tag/v43.0.0 [email protected] github.com
github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c... [email protected] github.com
github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c... [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report