5.4

CVE-2026-34766: electron Missing Authorization

CVSS: 5.4v3.1MediumAnalyzed
AliasesGHSA-9899-m83m-qhpj
Published 03-04-2026Last modified 06-04-2026
Open JSON

Vulnerability summary

CVE-2026-34766 is a medium (CVSS 5.4) Missing Authorization vulnerability in electron. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.2% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.18%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-04-2026
    PublishedVulnerability first disclosed.
  2. 06-04-2026
    Last modifiedVulnerability information updated.

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, the select-usb-device event callback did not validate the chosen device ID against the filtered list that was presented to the handler. An app whose handler could be influenced to select a device ID outside the filtered set would grant access to a device that did not match the renderer's requested filters or was listed in exclusionFilters. The WebUSB security blocklist remained enforced regardless, so security-sensitive devices on the blocklist were not affected. The practical impact is limited to apps with unusual device-selection logic. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.02 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.18%

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< 38.8.6 | ≥ 39.0.0-alpha.1, < 39.8.0 | ≥ 40.0.0-alpha.1, < 40.7.0 | ≥ 41.0.0-alpha.1, < 41.0.0-beta.8
Electronjs1 product
  • electronEOL< 38.8.6 | ≥ 39.0.0, < 39.8.0 | ≥ 40.0.0, < 40.7.0 | 41.0.0:alpha1 | 41.0.0:alpha2 | 41.0.0:alpha3 | 41.0.0:alpha4 | 41.0.0:alpha5 | 41.0.0:alpha6 | 41.0.0:beta1 | 41.0.0:beta2 | 41.0.0:beta3 | 41.0.0:beta4 | 41.0.0:beta5 | 41.0.0:beta6 | 41.0.0:beta7
Npm1 product
  • electron< 38.8.6 | ≥ 39.0.0-alpha.1, < 39.8.0 | ≥ 40.0.0-alpha.1, < 40.7.0 | ≥ 41.0.0-alpha.1, < 41.0.0-beta.8

3 vendors · 3 products

References

3 links