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  4. CVE 2026 114121 electron openexternal permission requests can be
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Back to active CVEs
Medium ยท CVSS 5.4CVE-2026-114121

Electron: openExternal permission requests can be attributed to the wrong originCVE-2026-114121

Answer in brief

CVE-2026-114121 records a Medium severity (CVSS 5.4) vulnerability in Electron: openExternal permission requests can be attributed to the wrong origin. The current sources do not mark it as known exploited. The current feed maps electron/electron (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 21, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026
Upstream Advisory

Key facts

Risk
Medium ยท CVSS 5.4
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps electron/electron (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
electron/electrongeneric<42.11.3 || >=43.0.0-alpha.1 <43.7.0 || >=44.0.0-alpha.1 <44.3.0 || >=45.0.0-alpha.1 <45.0.0-alpha.542.11.3, 43.7.0, 44.3.0, 45.0.0-alpha.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for electron/electron.
  2. 2Review the reported fix. Update electron/electron to 42.11.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 21, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5, requests to open external protocol URLs could be attributed to a document other than the one that initiated them, causing the requestingUrl passed to session.setPermissionRequestHandler to identify trusted content for a launch requested by untrusted content. An application that grants openExternal based on the requesting origin and allows untrusted content to open or navigate windows could therefore allow that content to launch an OS-registered external application. This issue is fixed in versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Electron: HID and USB permission checks can be attributed to the wrong originSame electron/electron package
  • Electron: Frame subscription trusts GPU-supplied frame geometrySame electron/electron package
  • Electron: Off-screen rendering on macOS trusts GPU-supplied frame geometrySame electron/electron package
  • Storybook: Missing origin validation in Storybook preview allows code injection from malicious websitesAlso CWE-346

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-346
Source
CVE List V5
Source checked
Oct 21, 2026
References
15 linked sources
Open source record