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Vulnerabilities

Vulnerability · CVE-2026-102673

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.

Published Sep 29, 2026 · catalog updated Oct 15, 2026 · Electron is a framework

Check if you run it

No confirmed exploitation is on record for CVE-2026-102673. EPSS is 0.13%. Act only if a listed version of Electron is a framework is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Electron is a framework).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.13%
Remediation
Advisory link
Affected products
cpe electronjs/electron

Electron 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe electronjs/electron42.0.0

How to fix CVE-2026-102673

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-102673. EPSS is 0.13%. Act only if a listed version of Electron is a framework is installed.

Which versions are affected?

Compare what you have installed with 42.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-346; CWE-693: Protection Mechanism Failure. EPSS 0.13%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 29, 2026 · NIST NVD

    Detected

    Electron 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-popup

  2. Oct 15, 2026 · NIST NVD

    Updated

    Electron 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-popup

Sources

  • CVE.orgVulnerability recordCVE-2026-102673

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-102673

    30-day exploitation probability 0.1%

    first.org
  • JVN iPediaGovernment advisoryCVE-2026-102673

    Electronは、JavaScript、HTML、およびCSSを使用してクロスプラットフォームのデスクトップアプリケーションを作成するためのフレームワークです。バージョン41.10.4、42.5.2、および43.0.0より前のElectronでは、OpenURLFromTabナビゲーションパスを介してサンドボックス化されたiframeから開かれたポップアップ（target="_blank"や中クリックを使用したリンクを含む）が、継承されたHTMLサンドボックス制限を受けていませんでした。そのため、allow-scriptsおよびallow-popups

    jvndb.jvn.jp
  • NIST NVDVulnerability recordCVE-2026-102673

    Electron 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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.