CVE-2026-70609Network attack vector

DevTools code execution via unsanitized mode option

Published Aug 5, 2026 · Updated Aug 5, 2026

Code injection in Electron before 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1 allows attackers to run JavaScript in DevTools. The DevTools frontend consumes the mode option of webContents.openDevTools() without sanitizing it, allowing crafted dock-state text to become executable script. Reachability requires attacker influence over the mode argument or an embedded webview that can call openDevTools(); Node.js access requires an unsandboxed configuration.

CVSS severity5.7
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Electron before 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1 allows attackers to run JavaScript in DevTools. The DevTools frontend consumes the mode option of webContents.openDevTools() without sanitizing it, allowing crafted dock-state text to become executable script. Reachability requires attacker influence over the mode argument or an embedded webview that can call openDevTools(); Node.js access requires an unsandboxed configuration.

The record

CVE
CVE-2026-70609
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Electron
Product
Electron
Classifications
CWE-94, CWE-116, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 39.8.7
  2. Affected versionversion=>= 40.0.0-alpha.1, < 40.9.0
  3. Affected versionversion=>= 41.0.0-alpha.1, < 41.2.0
  4. Affected versionversion=>= 42.0.0-alpha.1, < 42.0.0-beta.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Electron · Electronversion=< 39.8.7; version=>= 40.0.0-alpha.1, < 40.9.0; version=>= 41.0.0-alpha.1, < 41.2.0; version=>= 42.0.0-alpha.1, < 42.0.0-beta.1

Published CVSS scores

5.7GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-116Improper Encoding or Escaping of Output
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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