GHSA-qmv3-fv6v-rmhq: electron (CVE-2026-102677)

Package	Ecosystem	Affected	Fixed in
electron	npm	>=42.3.3, <42.10.0 \|\| >=43.0.0-beta.1, <43.5.0 \|\| >=44.0.0-alpha.1, <44.0.0-beta.6	42.10.0, 43.5.0, 44.0.0-beta.6

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Electron versions from 42.3.3 before 42.10.0, from 43.0.0-beta.1 before 43.5.0, and from 44.0.0-alpha.1 before 44.0.0-beta.6 are affected. The cache for sandboxed preload scripts did not check that a cached entry matched the preload it was served for, so a compromised renderer could run its own code in the preload context on a later load. Apps that load untrusted content are affected, and there are no app-side workarounds; upgrade to 42.10.0, 43.5.0, or 44.0.0-beta.6.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.8	High	3.1	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0010, the 1st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:34 UTC First seen by agentprime
31 Oct 2026, 13:34 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.