CVE-2026-114124: Electron: Off-screen rendering on macOS trusts GPU-supplied frame geometry

Severity: low (CVSS 3.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-21 · updated 2026-10-23
Weakness: CWE-125

Description

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.

Affected products

electron: before 42.11.6; from 43.0.0-alpha.1, < 43.7.3; from 44.0.0-alpha.1, < 44.4.3; from 45.0.0-alpha.1, < 45.0.0-alpha.9

References

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