7.5

CVE-2026-70601: electron Protection Mechanism Failure

CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-h7rp-cf8h-j98x
Published 05-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-70601 is a high (CVSS 7.5) Protection Mechanism Failure vulnerability in electron. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 19.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.29%
0%100%
Low · +0.04 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 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5, apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web content could obtain access to the isolated preload world and, through it, every capability the preload script has. In renderers without a sandbox, or with nodeIntegration enabled, this may escalate to Node.js access. Apps are affected if they expose Promise-returning functions via contextBridge, the standard pattern for wrapping ipcRenderer.invoke, in windows that load untrusted content. This issue is fixed in versions 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

+0.04 pp

From 0.24% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.29%

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< 39.8.9 | ≥ 40.0.0-alpha.1, < 40.9.2 | ≥ 41.0.0-alpha.1, < 41.2.2 | ≥ 42.0.0-alpha.1, < 42.0.0-beta.5
Electronjs1 product
  • electronEOL< 39.8.9 | ≥ 40.0.0, < 40.9.2 | ≥ 41.0.0, < 41.2.2 | 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
Npm1 product
  • electron< 39.8.9 | ≥ 40.0.0-alpha.1, < 40.9.2 | ≥ 41.0.0-alpha.1, < 41.2.2 | ≥ 42.0.0-alpha.1, < 42.0.0-beta.5

3 vendors · 3 products

References

2 links