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VulnerabilityPublished

CVE-2026-114121: electron · Origin Validation Error

Affects electronSource CVE Database V5

0

Not known to be exploited · CVSS 5.4 Medium · fixed in 45.0.0-alpha.5 : update electron when convenient.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 45.0.0-alpha.5, 44.3.0, 43.7.0 +1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade electron to 45.0.0-alpha.5, 44.3.0, 43.7.0 or 42.11.3.

Affected software

ProductAffectedFixed in
electronelectronAffected
  • >=45.0.0-alpha.1 <45.0.0-alpha.5
Fixed in
  • 45.0.0-alpha.5
electronelectronAffected
  • >=44.0.0-alpha.1 <44.3.0
Fixed in
  • 44.3.0
electronelectronAffected
  • >=43.0.0-alpha.1 <43.7.0
Fixed in
  • 43.7.0
electronelectronAffected
  • <42.11.3
Fixed in
  • 42.11.3

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.

References

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