Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
Priority LOW 39CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-345.
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00099 0th percentileScored 2026-11-07
Fix Partial electron (electron): 42.10.0, 43.5.0, 44.0.0-beta.6electron (npm): 42.10.0, 43.5.0, 44.0.0-beta.6Red Hat: 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| electron | electron | 42.3.3 to before 42.10.0; 43.0.0-beta.1 to before 43.5.0; 44.0.0-alpha.1 to before 44.0.0-beta.6 | 42.10.0, 43.5.0, 44.0.0-beta.6 | Patch available | CNA |
| — | electron (npm) | 42.3.3 to before 42.10.0 | 42.10.0 | Patch available | GHSA-qmv3-fv6v-rmhq |
| — | electron (npm) | 43.0.0-beta.1 to before 43.5.0 | 43.5.0 | Patch available | GHSA-qmv3-fv6v-rmhq |
| — | electron (npm) | 44.0.0-alpha.1 to before 44.0.0-beta.6 | 44.0.0-beta.6 | Patch available | GHSA-qmv3-fv6v-rmhq |
- electron Vendorelectron Affected 42.3.3 to before 42.10.0; 43.0.0-beta.1 to before 43.5.0; 44.0.0-alpha.1 to before 44.0.0-beta.6 Fixed in 42.10.0, 43.5.0, 44.0.0-beta.6 Patch available CNA
- electron (npm) Vendor— Affected 42.3.3 to before 42.10.0 Fixed in 42.10.0 Patch available GHSA-qmv3-fv6v-rmhq
- electron (npm) Vendor— Affected 43.0.0-beta.1 to before 43.5.0 Fixed in 43.5.0 Patch available GHSA-qmv3-fv6v-rmhq
- electron (npm) Vendor— Affected 44.0.0-alpha.1 to before 44.0.0-beta.6 Fixed in 44.0.0-beta.6 Patch available GHSA-qmv3-fv6v-rmhq
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* | 42.3.3 – 42.10.0; 43.0.0 to before 43.4.2 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha1:*:*:*:node.js:*:* | 44.0.0 alpha1 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha2:*:*:*:node.js:*:* | 44.0.0 alpha2 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha3:*:*:*:node.js:*:* | 44.0.0 alpha3 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha4:*:*:*:node.js:*:* | 44.0.0 alpha4 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha5:*:*:*:node.js:*:* | 44.0.0 alpha5 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha6:*:*:*:node.js:*:* | 44.0.0 alpha6 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha7:*:*:*:node.js:*:* | 44.0.0 alpha7 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha8:*:*:*:node.js:*:* | 44.0.0 alpha8 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:alpha9:*:*:*:node.js:*:* | 44.0.0 alpha9 | Vulnerable | Electronjs |
- cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* Versions 42.3.3 – 42.10.0; 43.0.0 to before 43.4.2 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha1:*:*:*:node.js:*:* Versions 44.0.0 alpha1 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha2:*:*:*:node.js:*:* Versions 44.0.0 alpha2 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha3:*:*:*:node.js:*:* Versions 44.0.0 alpha3 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha4:*:*:*:node.js:*:* Versions 44.0.0 alpha4 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha5:*:*:*:node.js:*:* Versions 44.0.0 alpha5 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha6:*:*:*:node.js:*:* Versions 44.0.0 alpha6 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha7:*:*:*:node.js:*:* Versions 44.0.0 alpha7 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha8:*:*:*:node.js:*:* Versions 44.0.0 alpha8 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:alpha9:*:*:*:node.js:*:* Versions 44.0.0 alpha9 Vulnerable ·Electronjs
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:electronjs:electron:44.0.0:beta1:*:*:*:node.js:*:* | 44.0.0 beta1 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:beta2:*:*:*:node.js:*:* | 44.0.0 beta2 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:beta3:*:*:*:node.js:*:* | 44.0.0 beta3 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:beta4:*:*:*:node.js:*:* | 44.0.0 beta4 | Vulnerable | Electronjs |
| cpe:2.3:a:electronjs:electron:44.0.0:beta5:*:*:*:node.js:*:* | 44.0.0 beta5 | Vulnerable | Electronjs |
- cpe:2.3:a:electronjs:electron:44.0.0:beta1:*:*:*:node.js:*:* Versions 44.0.0 beta1 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:beta2:*:*:*:node.js:*:* Versions 44.0.0 beta2 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:beta3:*:*:*:node.js:*:* Versions 44.0.0 beta3 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:beta4:*:*:*:node.js:*:* Versions 44.0.0 beta4 Vulnerable ·Electronjs
- cpe:2.3:a:electronjs:electron:44.0.0:beta5:*:*:*:node.js:*:* Versions 44.0.0 beta5 Vulnerable ·Electronjs
Remediation
- Fix · CNA electron (electron) Fixed in 42.10.0, 43.5.0, 44.0.0-beta.6
- Fix · GHSA-qmv3-fv6v-rmhq electron (npm) Fixed in 42.10.0 Advisory →
- Fix · GHSA-qmv3-fv6v-rmhq electron (npm) Fixed in 43.5.0 Advisory →
- Fix · GHSA-qmv3-fv6v-rmhq electron (npm) Fixed in 44.0.0-beta.6 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Build of Podman Desktop | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-102677
- 2026-10-03 Alias added: GHSA-qmv3-fv6v-rmhq
- 2026-10-09 CVSS score added · NVD
References
Patch 4
Other 5
More electron vulnerabilities
- TI-2026-39496 Information disclosure in electron-builder CVSS 4.0HIGH 8.2
- TI-2024-26621 Code Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6 CVSS 3.1HIGH 7.5
- TI-2023-09452 Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled in Electron CVSS 3.1CRITICAL 9.8
- TI-2026-39157 Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow CVSS 4.0CRITICAL 9.3
- TI-2017-09308 GitHub Electron before 1.6.8 allows remote command execution because of a nodeIntegration… CVSS 3.0HIGH 8.1
- TI-2022-11788 Exposure of Resource to Wrong Sphere in Electron CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-102677 · CVE Program
- CVE-2026-102677 · NVD
- FIRST EPSS
- GHSA-qmv3-fv6v-rmhq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-102677 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences