CVE-2026-114121

mediumpriority · track · 0EPSS 0.002 · 7 %ileUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (7th) EPSS

CVSS 5.4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

1 sources

osv

EPSS · scored 2026-10-23

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

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:Nsecondary · security-advisories@github.comexploitability 2.2 · impact 2.7

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:Nsecondary · OSV

v3.15mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-346USprimaryCWE-346USCWE-346US

affected products (4)

Products and version ranges known to be affected.

npm electron< 42.11.3osvUSpkg:npm/electron
npm electron43.0.0-alpha.1 → 43.7.0osvUSpkg:npm/electron
npm electron44.0.0-alpha.1 → 44.3.0osvUSpkg:npm/electron
npm electron45.0.0-alpha.1 → 45.0.0-alpha.5osvUSpkg:npm/electron

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-997q-gvvc-jwmxElectron: openExternal permission requests can be attributed to the wrong origin2026-10-22ghsa · osvUS
### Impact Requests to open external protocol URLs could be attributed to a document other than the one that asked for them, so the `requestingUrl` passed to `session.setPermissionRequestHandler` was a trusted origin for a launch untrusted content had requested. An origin-based handler could therefore let untrusted content launch an OS-registered external application. Apps are only affected if they grant `openExternal` based on the requesting origin and let untrusted content open or navigate windows. Apps whose permission handler denies `openExternal` for untrusted content are not affected. ### Workarounds Deny the `openExternal` permission for untrusted content, or deny the windows it opens with `setWindowOpenHandler`. ### Fixed Versions * `45.0.0-alpha.5` * `44.3.0` * `43.7.0` * `42.11.3` ### For more information If you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)

sources

Which sources assert this record, and when.

osv NVD CVE.org MITRE

published 2026-10-21modified 2026-10-22

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references (15) nvd

External citations — patches, advisories, analysis.

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