6.6

CVE-2026-70602: electron Improper Access Control

CVSS: 6.6v3.1MediumAnalyzed
AliasesGHSA-m55f-7gqj-fr98
Published 05-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-70602 is a medium (CVSS 6.6) Improper Access Control vulnerability in electron. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.6/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · +0.05 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 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, extension tab and scripting APIs were not scoped to the extension's own session. A malicious or compromised extension loaded into one session could navigate, script, and read from windows belonging to a different session. Apps are only affected if they load Chrome extensions via session.loadExtension and rely on separate sessions to isolate that extension from other content. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

+0.05 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.26%

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< 39.8.8 | ≥ 40.0.0-alpha.1, < 40.9.0 | ≥ 41.0.0-alpha.1, < 41.2.1 | ≥ 42.0.0-alpha.1, < 42.0.0-beta.3
Electronjs1 product
  • electronEOL< 39.8.8 | ≥ 40.0.0, < 40.9.0 | ≥ 41.0.0, < 41.2.1 | 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
Npm1 product
  • electron< 39.8.8 | ≥ 40.0.0-alpha.1, < 40.9.0 | ≥ 41.0.0-alpha.1, < 41.2.1 | ≥ 42.0.0-alpha.1, < 42.0.0-beta.3

3 vendors · 3 products

References

2 links