CVE-2026-34764 Electron has a use-after-free in offscreen shared texture release() callback
Electron apps using offscreen shared textures may suffer use-after-free, allowing attackers to cause crashes or execute code via memory corruption.
- 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-2026-34764?
CVE-2026-34764 is a low-severity use after free vulnerability in Electronjs Electron, published on 6 Apr 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. From 33.0.0-alpha.1 to before 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, apps that use offscreen rendering with GPU shared textures may be vulnerable to a use-after-free. Under certain conditions, the release() callback provided on a paint event texture can outlive its backing native state, and invoking it after that point dereferences freed memory in the main process, which may lead to a crash or memory corruption. Apps are only affected if they use offscreen rendering with webPreferences.offscreen: { useSharedTexture: true }. Apps that do not enable shared-texture offscreen rendering are not affected. To mitigate this issue, ensure texture.release() is called promptly after the texture has been consumed, before the texture object becomes unreachable. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5.
Weakness: CWE-416
Which versions are affected by CVE-2026-34764?
8 open source packages ship an affected version, including electron. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
electron npm | From 33.0.0-alpha.1 | 39.8.5 |
electron npm | From 33.0.0-alpha.1 | 39.8.5 |
electron npm | From 40.0.0-alpha.1 | 40.8.5 |
electron npm | From 40.0.0-alpha.1 | 40.8.5 |
electron npm | From 41.0.0-alpha.1 | 41.1.0 |
electron npm | From 41.0.0-alpha.1 | 41.1.0 |
2 more packages
electron npm | From 42.0.0-alpha.1 | 42.0.0-alpha.5 |
electron npm | From 42.0.0-alpha.1 | 42.0.0-alpha.5 |
Products include Electronjs Electron.
How do I fix CVE-2026-34764?
Upgrade electron to a fixed version for your release line: 39.8.5, 40.8.5, 41.1.0 or 42.0.0-alpha.5.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-34764 being exploited?
There is no known exploitation of CVE-2026-34764 in the wild and no public exploit code.
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Sources
Also known as GHSA-8x5q-pvf5-64mp.