CVE-2026-34772: Electron: Use-after-free in download save dialog callback

April 3, 2026 (updated April 6, 2026)

Apps that allow downloads and programmatically destroy sessions may be vulnerable to a use-after-free. If a session is torn down while a native save-file dialog is open for a download, dismissing the dialog dereferences freed memory, which may lead to a crash or memory corruption.

Apps that do not destroy sessions at runtime, or that do not permit downloads, are not affected.

References

github.com/advisories/GHSA-9w97-2464-8783
github.com/electron/electron
github.com/electron/electron/security/advisories/GHSA-9w97-2464-8783
nvd.nist.gov/vuln/detail/CVE-2026-34772

Code Behaviors & Features

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