cvedb.io
CVE-2026-34776
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-04-04T00:16:18.753 · Last modified 2026-06-17T10:39:36.307

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock() were vulnerable to an out-of-bounds heap read when parsing a crafted second-instance message. Leaked memory could be delivered to the app's second-instance event handler. This issue is limited to processes running as the same user as the Electron app. Apps that do not call app.requestSingleInstanceLock() are not affected. Windows is not affected by this issue. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.

Affected products

electronjs — electron

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.