CVE-2026-70598 Electron: Off-screen rendering trusts GPU-supplied geometry over shared-memory size
A compromised GPU process can cause out-of-bounds memory reads in the main process, leading to information disclosure or application crashes.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-70598?
CVE-2026-70598 is a low-severity memory corruption vulnerability in Electronjs Electron, published on 5 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3, offscreen rendering frame data received from the GPU process was not fully validated by the main process. A compromised GPU process could cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the app. This issue is fixed in 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Weakness: CWE-125
Which versions are affected by CVE-2026-70598?
8 open source packages ship an affected version, including electron. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
electron npm | All versions | 39.8.10 |
electron npm | All versions | 39.8.10 |
electron npm | From 40.0.0-alpha.1 | 40.9.0 |
electron npm | From 40.0.0-alpha.1 | 40.9.0 |
electron npm | From 41.0.0-alpha.1 | 41.2.1 |
electron npm | From 41.0.0-alpha.1 | 41.2.1 |
2 more packages
electron npm | From 42.0.0-alpha.1 | 42.0.0-beta.3 |
electron npm | From 42.0.0-alpha.1 | 42.0.0-beta.3 |
Products include Electronjs Electron.
How do I fix CVE-2026-70598?
Upgrade electron to a fixed version for your release line: 39.8.10, 40.9.0, 41.2.1 or 42.0.0-beta.3.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-70598 being exploited?
There is no known exploitation of CVE-2026-70598 in the wild and no public exploit code.
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- CVE-2026-34780 Electron: Context Isolation bypass via contextBridge VideoFrame transfer
- CVE-2026-102676 Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
- CVE-2026-102673 Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
Sources
Also known as GHSA-pfmc-3mgc-p6fp.