CVE-2026-102677
CVE-2026-102677 · Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.
CVSS 7.8 · High · EPSS 0.1% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
electron
- Versions
- >= 42.3.3, < 42.10.0: Affected
- >= 43.0.0-beta.1, < 43.5.0: Affected
- >= 44.0.0-alpha.1, < 44.0.0-beta.6: Affected
No fix published
electron npm
- Affected ranges
- SEMVER: ≥ 42.3.3, < 42.10.0
Update to 42.10.0
electron npm
- Affected ranges
- SEMVER: ≥ 43.0.0-beta.1, < 43.5.0
Update to 43.5.0
electron npm
- Affected ranges
- SEMVER: ≥ 44.0.0-alpha.1, < 44.0.0-beta.6
Update to 44.0.0-beta.6
Original sources
- https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq
- https://github.com/electron/electron/pull/52480
- https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601
- https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3
- https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217
- https://github.com/electron/electron/releases/tag/v42.10.0
- https://github.com/electron/electron/releases/tag/v43.5.0
- https://github.com/electron/electron/releases/tag/v44.0.0-beta.6
- https://nvd.nist.gov/vuln/detail/CVE-2026-102677