CVE catalog
CVE-2026-34778
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, a service worker running in a session coul
- Severity
- Medium · CVSS 5.9
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.13% · Oct 25, 2026
A flaw was found in Electron, a framework for building desktop applications. A service worker running in a session could spoof reply messages on the internal Inter-Process Communication (IPC) channel. This vulnerability affects applications that have service workers registered and use the results of `webContents.executeJavaScript()` in security-sensitive decisions. An attacker could exploit this to cause the main-process promise to resolve with attacker-controlled data, potentially leading to integrity issues. Electron: Electron: Integrity issue due to IPC channel spoofing by a service worker 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-2026-34778]
- [https://osv.dev/vulnerability/GHSA-xj5x-m3f3-5x3h]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34778.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]