Skip to content
Fencer Vulns
medium 5.6

CVE-2020-15215 json

Context isolation bypass in Electron

published 2020-10-06 6 y ago modified 2026-07-08 4 mo ago also GHSA-56pc-6jqp-xqj8 , EUVD-2020-1409

cvss
5.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Electron before versions 11.0.0-beta.6, 10.1.2, 9.3.1 or 8.5.2 is vulnerable to a context isolation bypass. Apps using both `contextIsolation` and `sandbox: true` are affected. Apps using both `contextIsolation` and `nodeIntegrationInSubFrames: true` are affected. This is a context isolation bypass, meaning that code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions.

Patch / fix

  • npm electron 8.5.2, 9.3.1, 10.1.2, 11.0.0-beta.6

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
GitHub 3.1 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
npm electron
>=8.0.0-beta.0, <8.5.2
>=9.0.0-beta.0, <9.3.1
>=10.0.0-beta.0, <10.1.2
>=11.0.0-beta.0, <11.0.0-beta.6
8.5.2
9.3.1
10.1.2
11.0.0-beta.6

Affected products

  • electron electron

Classification

Weakness
  • CWE-693 Protection Mechanism Failure
  • CWE-668 Exposure of Resource to Wrong Sphere

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.