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GHSA-f37v-82c4-4x64

Electron: Crash in clipboard.readImage() on malformed clipboard image data

Source: GitHub Advisory Database (reviewed) Low CVE-2026-34781

Packages

EcosystemPackageAffectedFixed in
npm electron < 39.8.5 39.8.5
npm electron >= 40.0.0-alpha.1, < 40.8.5 40.8.5
npm electron >= 41.0.0-alpha.1, < 41.1.0 41.1.0
npm electron >= 42.0.0-alpha.1, < 42.0.0-alpha.5 42.0.0-alpha.5

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact Apps that call `clipboard.readImage()` may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process. Apps are only affected if they call `clipboard.readImage()`. Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution. ### Workarounds Validate that the clipboard contains image data via `clipboard.availableFormats()` before calling `clipboard.readImage()`. Note this only narrows the window — upgrading to a fixed version is recommended. ### Fixed Versions * `42.0.0-alpha.5` * `41.1.0` * `40.8.5` * `39.8.5` ### For more information If you have any questions or comments about this advisory, email us at [[email protected]](mailto:[email protected])

References

External links from the advisory. They lead to third-party sites.