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.

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.

EPSS: 0.002 (7.6th percentile) — read the EPSS interpretation.

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.

Affected products

Electron — versions < 39.8.8, >= 40.0.0-alpha.1, < 40.9.0, >= 41.0.0-alpha.1, < 41.2.1

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

security-advisories@github.com (x_refsource_CONFIRM)

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.