GHSA-9wfr-w7mm-pc7f
HIGHGHSA-9wfr-w7mm-pc7f is a high-severity (CVSS 7.7) CWE-88 vulnerability in electron. O3 Security confirms whether GHSA-9wfr-w7mm-pc7f is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Electron: Renderer command-line switch injection via undocumented commandLineSwitches webPreference
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
electronnpmDescription
Impact
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.
Workarounds
Do not spread untrusted input into webPreferences. Use an explicit allowlist of permitted preference keys when constructing BrowserWindow or webContents options from external configuration.
Fixed Versions
41.0.0-beta.840.7.039.8.038.8.6
For more information
If there are any questions or comments about this advisory, send an email to [email protected]
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | electron | all versions | 38.8.6 |
| 📦npm | electron | ≥ 39.0.0-alpha.1&&< 39.8.0 | 39.8.0 |
| 📦npm | electron | ≥ 40.0.0-alpha.1&&< 40.7.0 | 40.7.0 |
| 📦npm | electron | ≥ 41.0.0-alpha.1&&< 41.0.0-beta.8 | 41.0.0-beta.8 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for electron. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update electron to 38.8.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9wfr-w7mm-pc7f is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-9wfr-w7mm-pc7f is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-9wfr-w7mm-pc7f. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-9wfr-w7mm-pc7f in your dependencies?
O3 detects GHSA-9wfr-w7mm-pc7f across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.