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CVE-2026-114121

MEDIUM 5.4

Published 2026-10-21 · Last modified 2026-10-21

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.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 12th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

5.4CVSS 3.1 · MEDIUM

  • ConfidentialityLow
  • IntegrityLow
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Electron

Products Electron

Weakness (CWE)

  • CWE-346: : Origin Validation Error

CVSS vector

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

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • electron npm

    pkg:npm/electron

    SEMVER range
    • All earlier versions (introduced 0)
    • Fixed boundary (excluded): 42.11.3
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"
  }
}
    GitHub Advisory Database · GHSA-997q-gvvc-jwmx · Updated 2026-10-22T17:00:05.173770092Z
  • electron npm

    pkg:npm/electron

    SEMVER range
    • Introduced version (included): 43.0.0-alpha.1
    • Fixed boundary (excluded): 43.7.0
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"
  }
}
    GitHub Advisory Database · GHSA-997q-gvvc-jwmx · Updated 2026-10-22T17:00:05.173770092Z
  • electron npm

    pkg:npm/electron

    SEMVER range
    • Introduced version (included): 44.0.0-alpha.1
    • Fixed boundary (excluded): 44.3.0
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"
  }
}
    GitHub Advisory Database · GHSA-997q-gvvc-jwmx · Updated 2026-10-22T17:00:05.173770092Z
  • electron npm

    pkg:npm/electron

    SEMVER range
    • Introduced version (included): 45.0.0-alpha.1
    • Fixed boundary (excluded): 45.0.0-alpha.5
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"
  }
}
    GitHub Advisory Database · GHSA-997q-gvvc-jwmx · Updated 2026-10-22T17:00:05.173770092Z

All CVSS metrics

  • MEDIUM 5.4 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
  • MEDIUM 5.4 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS