8.2

CVE-2026-102673: electron Origin Validation Error

CVSS: 8.2v3.1HighAnalyzed
AliasesGHSA-hq2x-r82h-9wj4
Published 29-09-2026Last modified 30-09-2026
Open JSON

Vulnerability summary

CVE-2026-102673 is a high (CVSS 8.2) Origin Validation Error vulnerability in electron. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.4% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-09-2026
    PublishedVulnerability first disclosed.
  2. 30-09-2026
    Last modifiedVulnerability information updated.

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

30-09-202620-10-2026
EPSS score
0.13%

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< 41.10.4 | ≥ 42.0.0-alpha.1, < 42.5.2 | ≥ 43.0.0-alpha.1, < 43.0.0
Electronjs1 product
  • electron< 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< 41.10.4 | ≥ 42.0.0-alpha.1, < 42.5.2 | ≥ 43.0.0-alpha.1, < 43.0.0

3 vendors · 3 products

References

9 links