Vulnerability in Electron
CVE-2026-70600
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, the native autofill popup could be positioned by a cross-origin iframe outside that iframe's bounds, over the embedding page's UI, enabling clickjacking or spoofing of trusted UI. Apps are only affected if they embed untrusted content in iframes within windows that also display trusted UI. Apps that do not embed untrusted third-party content are not affected. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (7.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000
Affected products
- Electron — versions < 39.8.8, >= 40.0.0-alpha.1, < 40.9.0, >= 41.0.0-alpha.1, < 41.2.1
- Electronjs Electron — versions 42.0.0
Weakness classification (CWE)
References
- github.com/electron/electron/security/advisories/GHSA-x8rc-wpg4-grpf (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-70600?
- CVE-2026-70600 is a low-severity vulnerability in Electron, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 3.1/10. Published 2026-08-05.
- How severe is CVE-2026-70600?
- Low severity. CVSS v3 base score is 3.1 out of 10.