CVE-2026-70598
lowpriority · track · 0EPSS 0.001 · 3 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (12)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-pfmc-3mgc-p6fpElectron: Off-screen rendering trusts GPU-supplied geometry over shared-memory size2026-08-05ghsa · osvUS
### Impact In offscreen rendering mode, 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. Apps are only affected if they use offscreen rendering (`webPreferences.offscreen`) and an attacker has separately gained code execution in the GPU process. Apps that do not use offscreen rendering are not affected. ### Workarounds There are no app side workarounds, you must update to a patched version of Electron. ### Fixed Versions * `42.0.0-beta.3` * `41.2.1` * `40.9.0` * `39.8.10` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)
also known as (3)
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sources
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references (7)
External citations — patches, advisories, analysis.
- https://github.com/electron/electron/commit/2c24640e7b0b9c74fe9f44bce0fde138340ff4fbcnnvd
- https://github.com/electron/electron/releasesPatchcnnvd
- https://github.com/electron/electron/security/advisories/GHSA-pfmc-3mgc-p6fpcnnvd
- https://github.com/electron/electron/commit/2c24640e7b0b9c74fe9f44bce0fde138340ff4fbenisa_euvd
- https://github.com/electron/electron/security/advisories/GHSA-pfmc-3mgc-p6fpenisa_euvd
- https://github.com/electron/electron/commit/2c24640e7b0b9c74fe9f44bce0fde138340ff4fbnvd
- https://github.com/electron/electron/security/advisories/GHSA-pfmc-3mgc-p6fpnvd
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