7.4

CVE-2026-70604: electron

CVSS: 7.4v3.1HighAnalyzed
AliasesGHSA-v3j7-r9gq-3gjw
Published 05-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-70604 is a high (CVSS 7.4) vulnerability in electron. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.35%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-08-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

+0.07 pp

From 0.28% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Electron1 product
  • electron< 39.8.10 | ≥ 40.0.0-alpha.1, < 40.9.3 | ≥ 41.0.0-alpha.1, < 41.4.0 | ≥ 42.0.0-alpha.1, < 42.0.0
Electronjs1 product
  • electronEOL< 39.8.10 | ≥ 40.0.0, < 40.9.3 | ≥ 41.0.0, < 41.4.0 | 42.0.0:alpha1 | 42.0.0:alpha2 | 42.0.0:alpha3 | 42.0.0:alpha4 | 42.0.0:alpha5 | 42.0.0:alpha6 | 42.0.0:beta1 | 42.0.0:beta2 | 42.0.0:beta3 | 42.0.0:beta4 | 42.0.0:beta5 | 42.0.0:beta6 | 42.0.0:beta7 | 42.0.0:beta8
Npm1 product
  • electron≥ 42.0.0-alpha.1, < 42.0.0 | ≥ 41.0.0-alpha.1, < 41.4.0 | ≥ 40.0.0-alpha.1, < 40.9.3 | < 39.8.10

3 vendors · 3 products

References

2 links