CVE catalog
CVE-2026-34776
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.req
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.22% · Oct 25, 2026
A flaw was found in Electron, a framework for building desktop applications. On macOS and Linux, a local user could exploit an out-of-bounds heap read vulnerability by sending a specially crafted message to an Electron application that uses the `app.requestSingleInstanceLock()` function. Apps that do not call app.requestSingleInstanceLock() are not affected. This could lead to the disclosure of sensitive memory contents, potentially revealing confidential information. This issue affects only processes running under the same user as the Electron application. Electron: Electron: Information disclosure via crafted second-instance message The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | electron | Not reported | 38.8.6 | fixed |
| Cpe | electron | Not reported | 39.8.1 | fixed |
| Cpe | electron | Not reported | 40.8.1 | fixed |
| Cpe | electron | Not reported | Not reported | unknown |
| Npm | electron | Not reported | 38.8.6 | fixed |
| Npm | electron | Not reported | 39.8.1 | fixed |
| Npm | electron | Not reported | 40.8.1 | fixed |
| Npm | electron | Not reported | 41.0.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | electron | cpe | Not reported | 38.8.6 | Not reported | Not reported | Not reported |
| Cpe | electron | cpe | Not reported | 39.8.1 | Not reported | Not reported | Not reported |
| Cpe | electron | cpe | Not reported | 40.8.1 | Not reported | Not reported | Not reported |
| Npm | electron | npm | Not reported | 38.8.6 | Not reported | Not reported | Not reported |
| Npm | electron | npm | Not reported | 39.8.1 | Not reported | Not reported | Not reported |
| Npm | electron | npm | Not reported | 40.8.1 | Not reported | Not reported | Not reported |
| Npm | electron | npm | Not reported | 41.0.0 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-34776]
- [https://osv.dev/vulnerability/GHSA-3c8v-cfp5-9885]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34776.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]