HighVulnerabilityGHSA-gr2m-v5gq-v685CVE-2026-102674Published 29 Sep 2026

Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions

Affected releases · electron

43.x43.0.0 – 43.4.0Fixed in 43.4.1
42.x42.0.0 – 42.9.1Fixed in 42.9.2
41.x41.0.0 – 41.10.5Fixed in 41.10.6
40.x40.0.0 – 40.10.6No fix on this line yet
39.x39.0.0 – 39.8.10No fix on this line yet
38.x38.0.0 – 38.8.6No fix on this line yet
37.x37.0.0 – 37.10.3No fix on this line yet
36.x and older0.1.0 – 36.9.5No fix, no longer updated

On 43.x, the newest line:

npm install electron@43.4.1

45.x

Not affected
45.0.0
1 release, latest

43.x

Affected
43.0.0 – 43.4.0
6 releases
Fixed
43.4.1 – 43.8.3
20 releases

42.x

Affected
42.0.0 – 42.9.1
22 releases
Fixed
42.9.2 – 42.11.18
23 releases

41.x

Affected
41.0.0 – 41.10.5
30 releases
Fixed
41.10.6 – 41.10.7
2 releases

40.x

Affected
40.0.0 – 40.10.6
26 releases

39.x

Affected
39.0.0 – 39.8.10
31 releases

38.x

Affected
38.0.0 – 38.8.6
19 releases

37.x

Affected
37.0.0 – 37.10.3
24 releases

36.x

Affected
36.0.0 – 36.9.5
23 releases

35.x

Affected
35.0.0 – 35.7.5
22 releases

34.x

Affected
34.0.0 – 34.5.8
22 releases

33.x

Affected
33.0.0 – 33.4.11
21 releases

32.x

Affected
32.0.0 – 32.3.3
19 releases

31.x

Affected
31.0.0 – 31.7.7
19 releases

30.x

Affected
30.0.0 – 30.5.1
19 releases

29.x

Affected
29.0.0 – 29.4.6
20 releases

28.x

Affected
28.0.0 – 28.3.3
21 releases

27.x

Affected
27.0.0 – 27.3.11
25 releases

26.x

Affected
26.0.0 – 26.6.10
24 releases

25.x

Affected
25.0.0 – 25.9.8
26 releases

24.x

Affected
24.0.0 – 24.8.8
29 releases

23.x

Affected
23.0.0 – 23.3.13
25 releases

22.x

Affected
22.0.0 – 22.3.27
33 releases

21.x

Affected
21.0.0 – 21.4.4
18 releases

20.x

Affected
20.0.0 – 20.3.12
23 releases

19.x

Affected
19.0.0 – 19.1.9
28 releases

18.x

Affected
18.0.0 – 18.3.15
25 releases

17.x

Affected
17.0.0 – 17.4.11
20 releases

16.x

Affected
16.0.0 – 16.2.8
22 releases

15.x

Affected
15.0.0 – 15.5.7
24 releases

14.x

Affected
14.0.0 – 14.2.9
15 releases

13.x

Affected
13.0.0 – 13.6.9
29 releases

12.x

Affected
12.0.0 – 12.2.3
26 releases

11.x

Affected
11.0.0 – 11.5.0
27 releases

10.x

Affected
10.0.0 – 10.4.7
22 releases

9.x

Affected
9.0.0 – 9.4.4
22 releases

8.x

Affected
8.0.0 – 8.5.5
25 releases

7.x

Affected
7.0.0 – 7.3.3
26 releases

6.x

Affected
6.0.0 – 6.1.12
26 releases

5.x

Affected
5.0.0 – 5.0.13
14 releases

4.x

Affected
4.0.0 – 4.2.12
28 releases

3.x

Affected
3.0.0 – 3.1.13
31 releases

2.x

Affected
2.0.0 – 2.0.18
19 releases

1.x

Affected
1.3.1 – 1.8.8
79 releases

0.x

Affected
0.1.0 – 0.4.1
8 releases

Is your project affected?

Paste your package.json, or type the range you declare for electron. It is read in your browser and sent nowhere.

What happens

Impact

Windows opened from a sandboxed top-level document did not inherit that document's HTML sandbox restrictions, so content that was meant to run sandboxed could open a window with the app's full origin. GHSA-hq2x-r82h-9wj4 covers the same issue for sandboxed iframes.

Apps are only affected if they render untrusted content in a sandboxed top-level document that allows popups. Apps that deny popups from untrusted content with setWindowOpenHandler are not affected.

Workarounds

Return { action: 'deny' } from setWindowOpenHandler for windows opened by untrusted content.

Fixed Versions

44.0.0-beta.5
43.4.1
42.9.2
41.10.6

For more information

If you have any questions or comments about this advisory, email us at security@electronjs.org