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Fencer Vulns
medium 6.9

CVE-2026-70611 json

Electron: DevTools embedder handler executes arbitrary files via shell open

published 2026-08-05 3 mo ago modified 2026-11-03 5 d ago also EUVD-2026-53545 , GHSA-f2r8-jv7c-xqmp

cvss
6.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.1, and 42.0.0-beta.3, the DevTools reveal in file manager action could launch the target file rather than reveal it. An attacker with a separate means of running script inside the DevTools frontend, such as a malicious DevTools extension, could use showItemInFolder handling to execute native code outside the sandbox when DevTools is opened for windows exposed to untrusted content or untrusted DevTools extensions. This issue is fixed in 39.8.9, 40.9.2, 41.2.1, and 42.0.0-beta.3.

Patch / fix

  • npm electron 39.8.9, 40.9.2, 41.2.1, 42.0.0-beta.3
  • atom electron 39.8.9, 40.9.2, 41.2.1, 42.0.0-beta.3
  • electronjs electron 39.8.9, 40.9.2, 41.2.1, 42.0.0-beta.3

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
3 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.9 CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
GitHub 3.1 6.9 CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
npm electron
<39.8.9
>=40.0.0-alpha.1, <40.9.2
>=41.0.0-alpha.1, <41.2.1
>=42.0.0-alpha.1, <42.0.0-beta.3
39.8.9
40.9.2
41.2.1
42.0.0-beta.3

Affected products

  • electron electron

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.