CVE-2026-70609

mediumpriority · track · 0EPSS 0.005 · 45 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.53% (45th) EPSS
CVSS 5.7 · medium
Is it mine?
12 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, the mode option of webContents.openDevTools() was not sanitized before use by the DevTools frontend. If an attacker can influence this value, script under their control may run in the DevTools context, which in unsandboxed configurations has access to Node.js, including when untrusted input reaches the mode argument of openDevTools() or untrusted content calls openDevTools() on a webview it embeds. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.

01

cvss

Technical severity, 0–10. One row per scoring source.

5.7
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.7mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:Nsecondary · ENISA EU
v3.15.7mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:Nsecondary · security-advisories@github.comexploitability 0.5 · impact 5.2
v3.15.7mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:Nsecondary · OSV
v3.15.2mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-116USCWE-116USCWE-94USCWE-94US
04

affected products (12)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • GHSA-4f78-qhmw-8j8mElectron: DevTools JavaScript Injection via Unsanitized Dock State Parameter2026-08-05ghsa · osvUS

    ### Impact The `mode` option of `webContents.openDevTools()` was not sanitized before use by the DevTools frontend. If an attacker can influence this value, script under their control may run in the DevTools context, which in unsandboxed configurations has access to Node.js. Apps are only affected if untrusted input can reach the `mode` argument of `openDevTools()`, or if untrusted content can call `openDevTools()` on a `<webview>` it embeds. Apps that only ever pass a fixed dock mode are not affected. ### Workarounds Only pass fixed, allowlisted values (`right`, `bottom`, `undocked`, `detach`) as the DevTools `mode`, and do not expose `openDevTools` to untrusted content. ### Fixed Versions * `42.0.0-beta.1` * `41.2.0` * `40.9.0` * `39.8.7` ### For more information If you have any questions or comments about this advisory, email Electron at [security@electronjs.org](mailto:security@electronjs.org)

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdosvNVDCVE.orgMITRE
published 2026-08-05modified 2026-08-06
08

references (40)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan