CVE-2026-102677
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Analyzed
Affected
- Electronjs Electron ≤ 42.10.0
- Electronjs Electron < 43.4.2
- Electronjs Electron 44.0.0
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-102677.md and follow it. Check whether this project is affected by CVE-2026-102677. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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/pull/52480
- 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://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq
References
- 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/pull/52480
- 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://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq