GHSA-mpjm-v997-c4h4 is a medium-severity (CVSS 6.8) CWE-668 vulnerability in electron. O3 Security confirms whether GHSA-mpjm-v997-c4h4 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Electron's sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API
Real-World Exposure
electron📦electron📦electronReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.
Description
Impact
This vulnerability allows a sandboxed renderer to request a "thumbnail" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases.
All current stable versions of Electron are affected.
Patches
This was fixed with #30728, and the following Electron versions contain the fix:
- 15.0.0-alpha.10
- 14.0.0
- 13.3.0
- 12.1.0
- 11.5.0
Workarounds
If your app enables contextIsolation, this vulnerability is significantly more difficult for an attacker to exploit.
Further, if your app does not depend on the createThumbnailFromPath API, then you can simply disable the functionality. In the main process, before the 'ready' event:
delete require('electron').nativeImage.createThumbnailFromPath
For more information
If you have any questions or comments about this advisory, email us at [email protected].
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | electron | all versions | 11.5.0 |
| 📦npm | electron | ≥ 12.0.0&&< 12.1.0 | 12.1.0 |
| 📦npm | electron | ≥ 13.0.0&&< 13.3.0 | 13.3.0 |
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 11.5.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mpjm-v997-c4h4 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-mpjm-v997-c4h4 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-mpjm-v997-c4h4. 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-mpjm-v997-c4h4 in your dependencies?
O3 detects GHSA-mpjm-v997-c4h4 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.