CVE-2026-114121
Electron: openExternal permission requests can be attributed to the wrong origin
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.
INFO
Published Date :
Oct. 21, 2026, 5:18 p.m.
Last Modified :
Oct. 21, 2026, 5:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update to Electron versions 42.11.3 or later.
- Update to Electron versions 43.7.0 or later.
- Update to Electron versions 44.3.0 or later.
- Update to Electron versions 45.0.0-alpha.5 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-114121.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-114121 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-114121
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-114121 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-114121 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Oct. 21, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-346 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/114xxx/CVE-2026-114121.json">CVE-2026-114121</a> Added Reference https://github.com/electron/electron/commit/25057643bf6d9a20bad69e45707551ccf546f5ce Added Reference https://github.com/electron/electron/commit/8aa5414f73792ed3b2e3f9ab6391b1832e6dc2c3 Added Reference https://github.com/electron/electron/commit/92a783952891805f2f82f344c40a6917b98a7d98 Added Reference https://github.com/electron/electron/commit/e0a20d5277b567aea8603f8e9852a4341407a586 Added Reference https://github.com/electron/electron/commit/e3a400911084537bce7380ffea8af939572ce8dd Added Reference https://github.com/electron/electron/pull/53682 Added Reference https://github.com/electron/electron/pull/53696 Added Reference https://github.com/electron/electron/pull/53697 Added Reference https://github.com/electron/electron/pull/53698 Added Reference https://github.com/electron/electron/pull/53699 Added Reference https://github.com/electron/electron/releases/tag/v42.11.3 Added Reference https://github.com/electron/electron/releases/tag/v43.7.0 Added Reference https://github.com/electron/electron/releases/tag/v44.3.0 Added Reference https://github.com/electron/electron/releases/tag/v45.0.0-alpha.5 Added Reference https://github.com/electron/electron/security/advisories/GHSA-997q-gvvc-jwmx