What’s Vulnerable › Vulnerabilities
CVE-2026-34764: Electron has a use-after-free in offscreen shared texture release() callback
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-06 · updated 2026-06-17
- Weakness: CWE-416
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.
Affected products
- electron: from 33.0.0 before 39.8.5; from 40.0.0 before 40.8.5; from 41.0.0 before 41.1.0; 42.0.0-alpha1, 42.0.0-alpha2, 42.0.0-alpha3, 42.0.0-alpha4 — fixed in 39.8.5, 40.8.5, 41.1.0
How to fix
Upgrade to a fixed version: electron 39.8.5, 40.8.5, 41.1.0. Check the vendor advisory for mitigations.
References
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