Use After Free in Electron
CVE-2026-34771
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() m…
Vulnerability class: Use-After-Free
EPSS: 0.003 (20.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Electron — versions < 38.8.6, >= 39.0.0-alpha.1, < 39.8.0, >= 40.0.0-alpha.1, < 40.7.0
- Electronjs Electron — versions 41.0.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-34771?
- CVE-2026-34771 is a high-severity vulnerability in Electron, classified under Use After Free. CVSS score: 7.5/10. Published 2026-04-04.
- How severe is CVE-2026-34771?
- High severity. CVSS v3 base score is 7.5 out of 10.