CVE-2021-39184
Sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API
We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.
Please see our statement on Data Privacy.
Sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API
| Assigner | GitHub_M |
| Reserved | 2021-08-16 |
| Published | 2021-10-12 |
| Updated | 2024-08-04 |
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 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. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling `contextIsolation` in one's app. One may also disable the functionality of the `createThumbnailFromPath` API if one does not need it.
https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4
https://github.com/electron/electron/pull/30728
Support options
