CVE-2026-102677Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
Updated under an hour ago ()
Does this affect you?
It affects electron and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.10%, higher than 1% of scored CVEs.
Do this next
Free account, 1 product
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 (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-20, CWE-345
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.10% (percentile 1)
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
electron electron electron:electron (from the name) | from 42.3.3, < 42.10.0; from 43.0.0-beta.1, < 43.5.0; from 44.0.0-alpha.1, < 44.0.0-beta.6 | CNA record |
electronjs electron electronjs:electron | from 42.3.3 through 42.10.0; from 43.0.0 before 43.4.2; 44.0.0; 44.0.0; 44.0.0; 44.0.0; 44.0.0; 44.0.0; and 8 more ranges | NVD |
References
- https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhqx-refsource-confirm, vendor-advisory
- https://github.com/electron/electron/pull/52480x-refsource-misc, issue-tracking, patch
- https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601x-refsource-misc, patch
- https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3x-refsource-misc, patch
- https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217x-refsource-misc, patch
- https://github.com/electron/electron/releases/tag/v42.10.0x-refsource-misc, release-notes
- https://github.com/electron/electron/releases/tag/v43.5.0x-refsource-misc, release-notes
- https://github.com/electron/electron/releases/tag/v44.0.0-beta.6x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.