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TI-2026-78904 Aliases CVE-2026-114124GHSA-h3v5-h239-pg29

Out-of-bounds read in Electron macOS off-screen rendering

Priority LOW 18CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
Low · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Electron before 42.11.6, from 43.0.0-alpha.1 before 43.7.3, from 44.0.0-alpha.1 before 44.4.3, and from 45.0.0-alpha.1 before 45.0.0-alpha.9 are affected. The main process does not fully validate frame data from the GPU process during macOS off-screen rendering, causing an out-of-bounds read (CWE-125). An attacker who already has code execution in the GPU process can send inconsistent frame geometry to crash the application or disclose memory.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 42.11.6, 43.7.3, 44.4.3, and 45.0.0-alpha.9, frame data received from the GPU process for macOS offscreen rendering was not fully validated by the main process. An attacker who had separately gained code execution in the GPU process could provide inconsistent frame geometry and cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the application. This issue is fixed in versions 42.11.6, 43.7.3, 44.4.3, and 45.0.0-alpha.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00185 8th percentileScored 2026-11-07
Fix Fixed electron (electron): 42.11.6, 43.7.3, 44.4.3 +1electron (npm): 42.11.6, 43.7.3, 44.4.3 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
electronelectronbefore 42.11.6; 43.0.0-alpha.1 to before 43.7.3; 44.0.0-alpha.1 to before 44.4.3; 45.0.0-alpha.1 to before 45.0.0-alpha.942.11.6, 43.7.3, 44.4.3, 45.0.0-alpha.9Patch availableCNA
—electron (npm)before 42.11.642.11.6Patch availableGHSA-h3v5-h239-pg29
—electron (npm)43.0.0-alpha.1 to before 43.7.343.7.3Patch availableGHSA-h3v5-h239-pg29
—electron (npm)44.0.0-alpha.1 to before 44.4.344.4.3Patch availableGHSA-h3v5-h239-pg29
—electron (npm)45.0.0-alpha.1 to before 45.0.0-alpha.945.0.0-alpha.9Patch availableGHSA-h3v5-h239-pg29
  • electron Vendorelectron Affected before 42.11.6; 43.0.0-alpha.1 to before 43.7.3; 44.0.0-alpha.1 to before 44.4.3; 45.0.0-alpha.1 to before 45.0.0-alpha.9 Fixed in 42.11.6, 43.7.3, 44.4.3, 45.0.0-alpha.9 Patch available CNA
  • electron (npm) Vendor— Affected before 42.11.6 Fixed in 42.11.6 Patch available GHSA-h3v5-h239-pg29
  • electron (npm) Vendor— Affected 43.0.0-alpha.1 to before 43.7.3 Fixed in 43.7.3 Patch available GHSA-h3v5-h239-pg29
  • electron (npm) Vendor— Affected 44.0.0-alpha.1 to before 44.4.3 Fixed in 44.4.3 Patch available GHSA-h3v5-h239-pg29
  • electron (npm) Vendor— Affected 45.0.0-alpha.1 to before 45.0.0-alpha.9 Fixed in 45.0.0-alpha.9 Patch available GHSA-h3v5-h239-pg29

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:*——Electronjs
  • cpe:2.3:a:electronjs:electron:*:*:*:*:*:*:*:* Versions — — ·Electronjs

Remediation

Upgrade the electron npm package to 42.11.6 on the 42 line, 43.7.3 on the 43 line, 44.4.3 on the 44 line, or 45.0.0-alpha.9 on the 45 line.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

  • Fix · CNA electron (electron) Fixed in 42.11.6, 43.7.3, 44.4.3, 45.0.0-alpha.9
  • Fix · GHSA-h3v5-h239-pg29 electron (npm) Fixed in 42.11.6 Advisory →
  • Fix · GHSA-h3v5-h239-pg29 electron (npm) Fixed in 43.7.3 Advisory →
  • Fix · GHSA-h3v5-h239-pg29 electron (npm) Fixed in 44.4.3 Advisory →
  • Fix · GHSA-h3v5-h239-pg29 electron (npm) Fixed in 45.0.0-alpha.9 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-114124
  2. 2026-10-22 Alias added: GHSA-h3v5-h239-pg29
  3. 2026-10-22 Fix available: npm/[email protected], npm/[email protected], npm/[email protected] +1 · GHSA-h3v5-h239-pg29
  4. 2026-10-22 CVSS score added · GHSA-h3v5-h239-pg29
  5. 2026-10-22 Weakness changed · GHSA-h3v5-h239-pg29
  6. 2026-10-22 17 new references · GHSA-h3v5-h239-pg29
  7. 2026-10-23 CISA SSVC decision points changed
  8. 2026-11-07 Affected versions changed · Red Hat
  9. 2026-11-07 CVSS score added · Red Hat

References

Advisory 1

Other 16

  • TI-2026-39496 Information disclosure in electron-builder CVSS 4.0HIGH 8.2
  • TI-2024-26621 Code Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6 CVSS 3.1HIGH 7.5
  • TI-2023-09452 Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled in Electron CVSS 3.1CRITICAL 9.8
  • TI-2026-39157 Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow CVSS 4.0CRITICAL 9.3
  • TI-2017-09308 GitHub Electron before 1.6.8 allows remote command execution because of a nodeIntegration… CVSS 3.0HIGH 8.1
  • TI-2022-11788 Exposure of Resource to Wrong Sphere in Electron CVSS 3.1CRITICAL 9.8
See all 74 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences