Tunnelblick

free software for OpenVPN on macOS

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CVE-2026-31893

CVE-2026-31893 describes a serious Tunnelblick vulnerability.

This vulnerability is present in all versions of all Tunnelblick versions 3.3beta26 through 9.0beta01.

Tunnelblick 8.0.1 and 9.0beta02 contain fixes for the vulnerability.

The CVE is expected to be published and this page updated on or before 2026-04-27.