Electron: openExternal permission requests can be attributed to the wrong origin
Summary
| CVE | CVE-2026-114121 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-21 17:18:25 UTC |
| Updated | 2026-10-21 17:18:25 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.4 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Problem Types: CWE-346 | CWE-346 CWE-346: Origin Validation Error
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
| 3.1 | CNA | DECLARED | 5.4 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
ChangedConfidentiality
LowIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Electron | Electron | affected < 42.11.3 | Not specified |
| CNA | Electron | Electron | affected >= 43.0.0-alpha.1, < 43.7.0 | Not specified |
| CNA | Electron | Electron | affected >= 44.0.0-alpha.1, < 44.3.0 | Not specified |
| CNA | Electron | Electron | affected >= 45.0.0-alpha.1, < 45.0.0-alpha.5 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/electron/electron/commit/e0a20d5277b567aea8603f8e9852a4341407... | [email protected] | github.com | |
| github.com/electron/electron/pull/53697 | [email protected] | github.com | |
| github.com/electron/electron/commit/25057643bf6d9a20bad69e45707551ccf546... | [email protected] | github.com | |
| github.com/electron/electron/pull/53698 | [email protected] | github.com | |
| github.com/electron/electron/commit/8aa5414f73792ed3b2e3f9ab6391b1832e6d... | [email protected] | github.com | |
| github.com/electron/electron/security/advisories/GHSA-997q-gvvc-jwmx | [email protected] | github.com | |
| github.com/electron/electron/pull/53699 | [email protected] | github.com | |
| github.com/electron/electron/pull/53682 | [email protected] | github.com | |
| github.com/electron/electron/pull/53696 | [email protected] | github.com | |
| github.com/electron/electron/commit/e3a400911084537bce7380ffea8af939572c... | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v45.0.0-alpha.5 | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v42.11.3 | [email protected] | github.com | |
| github.com/electron/electron/commit/92a783952891805f2f82f344c40a6917b98a... | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v44.3.0 | [email protected] | github.com | |
| github.com/electron/electron/releases/tag/v43.7.0 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.