CVE-2026-102674: Electron · Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions
Affects electronSource GCVE Database
Not known to be exploited · CVSS 8.2 High : upgrade to 44.0.0-beta.5 soon.
Data as of 13 Nov 2026, 23:53 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 44.0.0-beta.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 14 Nov 2026.
What to do
Upgrade electron to 44.0.0-beta.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmelectron | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in Electron versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5. Users should upgrade to these or later versions to remediate the vulnerability. As a workaround, applications can return { action: 'deny' } from setWindowOpenHandler for windows opened by untrusted content to prevent popup windows from bypassing sandbox restrictions.
Description
Electron versions prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5 contain a vulnerability where windows opened from a sandboxed top-level document do not inherit the document's HTML sandbox restrictions. This allows sandboxed content to open new windows with the app's full origin, potentially escalating privileges. The issue affects apps rendering untrusted content in sandboxed top-level documents that allow popups. Apps that deny popups from untrusted content using setWindowOpenHandler are not affected. Fixes are available in the specified versions.
References
- github.com/electron/electron/security/advisories/GHSA-gr2m-v5gq-v685 (opens in a new tab)
- github.com/electron/electron/commit/29fc130569f970e91e355383821a4af0f25724a2 (opens in a new tab)
- github.com/electron/electron/commit/3ecf3e74f4be6e2360644679b0b4698742be0e1d (opens in a new tab)
- github.com/electron/electron/commit/6594d5a5b074cf501da084dc7908d3df0d68a886 (opens in a new tab)
- github.com/electron/electron/commit/e9c4d3cbe912e18d7c63af78e63e98ae7a48cd3a (opens in a new tab)
- github.com/electron/electron (opens in a new tab)
- github.com/electron/electron/releases/tag/v41.10.6 (opens in a new tab)
- github.com/electron/electron/releases/tag/v42.9.2 (opens in a new tab)
- github.com/electron/electron/releases/tag/v43.4.1 (opens in a new tab)
- github.com/electron/electron/releases/tag/v44.0.0-beta.5 (opens in a new tab)