Electron: Out-of-bounds read in second-instance IPC on macOS and Linux (electron electron)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
Description
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.
Weaknesses (CWE)
- CWE-125 — Out-of-bounds Read
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L | GitHub_M |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-3c8v-cfp5-9885 — Electron: Out-of-bounds read in second-instance IPC on macOS and Linux
European references
- ENISA EUVD · EUVD-2026-18951
- GCVE · GCVE-0-2026-34776
Affected configurations (NVD CPE)
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*< 38.8.6cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 39.0.0 < 39.8.1cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 40.0.0 < 40.8.1cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta7:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:41.0.0:beta8:*:*:*:node.js:*:*
Affected products
| Product | Versions |
|---|---|
| electron · electron | affected < 38.8.6 ; affected >= 39.0.0-alpha.1, < 39.8.1 ; affected >= 40.0.0-alpha.1, < 40.8.1 ; affected >= 41.0.0-alpha.1, < 41.0.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |