Vulnerability details
CVE-2026-34769
Electron: Renderer command-line switch injection via undocumented commandLineSwitches webPreference
Official description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, an undocumented commandLineSwitches webPreference allowed arbitrary switches to be appended to the renderer process command line. Apps that construct webPreferences by spreading untrusted configuration objects may inadvertently allow an attacker to inject switches that disable renderer sandboxing or web security controls. Apps are only affected if they construct webPreferences from external or untrusted input without an allowlist. Apps that use a fixed, hardcoded webPreferences object are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| 7.7High | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Red Hat | Red Hat Build of Podman Desktop | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Build of Podman Desktop | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Build of Podman Desktop - Tech Preview | All | CVEProject cvelistV5 (CNA) |
| electron | electron | < 38.8.6 | CVEProject cvelistV5 (CNA) |
| electron | electron | >= 39.0.0-alpha.1, < 39.8.0 | CVEProject cvelistV5 (CNA) |
| electron | electron | >= 40.0.0-alpha.1, < 40.7.0 | CVEProject cvelistV5 (CNA) |
| electron | electron | >= 41.0.0-alpha.1, < 41.0.0-beta.8 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/electron/electron/security/advisories/GHSA-9wfr-w7mm-pc7f x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2026-34769 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2455004 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34769.json x_sadp-csaf-vex
Details
- Published
- 2026-04-04
- Last updated
- 2026-07-15
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-912Hidden Functionality
- CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')