CVE-2026-114121
An application that grants openExternal based on the requesting origin and allows untrusted content to open or navigate windows could therefore allow that content to launch an OS-registered external application.
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5, requests to open external protocol URLs could be attributed to a document other than the one that initiated them, causing the requestingUrl passed to session.setPermissionRequestHandler to identify trusted content for a launch requested by untrusted content. An application that grants openExternal based on the requesting origin and allows untrusted content to open or navigate windows could therefore allow that content to launch an OS-registered external application. This issue is fixed in versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.22% probability · 12th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-346
- Source
- security-advisories@github.com
EPSS moved from 0.2% on 22 October 2026 to 0.2% on 26 October 2026.
References
- https://github.com/electron/electron/commit/25057643bf6d9a20bad69e45707551ccf546f5ce
- https://github.com/electron/electron/commit/8aa5414f73792ed3b2e3f9ab6391b1832e6dc2c3
- https://github.com/electron/electron/commit/92a783952891805f2f82f344c40a6917b98a7d98
- https://github.com/electron/electron/commit/e0a20d5277b567aea8603f8e9852a4341407a586
- https://github.com/electron/electron/commit/e3a400911084537bce7380ffea8af939572ce8dd
- https://github.com/electron/electron/pull/53682
- https://github.com/electron/electron/pull/53696
- https://github.com/electron/electron/pull/53697
- https://github.com/electron/electron/pull/53698
- https://github.com/electron/electron/pull/53699
- https://github.com/electron/electron/releases/tag/v42.11.3
- https://github.com/electron/electron/releases/tag/v43.7.0
- https://github.com/electron/electron/releases/tag/v44.3.0
- https://github.com/electron/electron/releases/tag/v45.0.0-alpha.5
- https://github.com/electron/electron/security/advisories/GHSA-997q-gvvc-jwmx
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.