GHSA-8337-3p73-46f4
HIGHGHSA-8337-3p73-46f4 is a high-severity (CVSS 7.5) Use After Free vulnerability in electron. O3 Security confirms whether GHSA-8337-3p73-46f4 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
electronnpmDescription
Impact
Apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption.
Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected.
Workarounds
Respond to permission requests synchronously, or deny fullscreen, pointer-lock, and keyboard-lock requests if an asynchronous flow is required.
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, please email [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-8337-3p73-46f4 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-8337-3p73-46f4 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-8337-3p73-46f4. 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-8337-3p73-46f4 in your dependencies?
O3 detects GHSA-8337-3p73-46f4 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.