CVE-2026-114124
### Impact In offscreen rendering mode on macOS, 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. GHSA-pfmc-3mgc-p6fp covers the same issue on the other capture paths. Apps are only affected if they use offscreen rendering (`webPreferences.offscreen`) on macOS 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 * `45.0.0-alpha.9` * `44.4.3` * `43.7.3` * `42.11.6` ### For more information If you have any questions or comments about this advisory, email us at [[email protected]](mailto:[email protected])
Properties
- Severity
- low
- Summary
- Electron: Off-screen rendering on macOS trusts GPU-supplied frame geometry
- Nvd fetched at
- 2026-10-22T22:14:18.200859+00:00
- Epss score
- 0.00151
- Cvss severity
- LOW
- Cvss score
- 3.9
- Retrieved at
- 2026-10-22T22:17:33+00:00
- Ghsa published
- 2026-10-22T16:44:33Z
- Source url
- https://github.com/advisories/GHSA-h3v5-h239-pg29
- Ghsa updated
- 2026-10-22T16:44:34Z
- Ghsa id
- GHSA-h3v5-h239-pg29
- Last source
- FIRST EPSS
- Score
- 3.9
- Cvss version
- 3.1
- Cve id
- CVE-2026-114124
- Cvss vector
- CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
- First seen by Signal
- 2026-10-21T22:34:38+00:00
- Is ghsa only
- false
- Vector
- CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
- Published at
- 2026-10-21T18:17:24.800
Related Entities (3)
AFFECTS (1)
HAS_WEAKNESS (1)
VULNERABLE_TO (1)
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