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    <title>Most recent entries from all</title>
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    <lastBuildDate>Wed, 07 Oct 2026 08:25:11 +0000</lastBuildDate>
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      <title>CVE-2026-31893 — Tunnelblick arbitrary file read via symlink following in tunnelblickd</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-31893</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Tunnelblick&lt;/p&gt;
&lt;p&gt;Tunnelblick is an open source graphic user interface for OpenVPN on macOS. In versions 3.3beta26 through 9.0beta01, any local user can read arbitrary root-owned files by exploiting a symlink following vulnerability in tunnelblick-helper, reachable through the world-accessible tunnelblickd Unix socket. The socket is configured with mode 0666, allowing any local user to connect. No authorization check is performed on the connecting client. The tunnelblick-helper process constructs a path to config.ovpn inside a user-controlled .tblk directory and reads it as root without symlink validation. An attacker can create a .tblk configuration with a symlinked config.ovpn pointing to any file and request tunnelblickd to read it. This issue has been fixed in versions 9.0beta02.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Tunnelblick&lt;/p&gt;
&lt;p&gt;Tunnelblick is an open source graphic user interface for OpenVPN on macOS. In versions 3.3beta26 through 9.0beta01, any local user can read arbitrary root-owned files by exploiting a symlink following vulnerability in tunnelblick-helper, reachable through the world-accessible tunnelblickd Unix socket. The socket is configured with mode 0666, allowing any local user to connect. No authorization check is performed on the connecting client. The tunnelblick-helper process constructs a path to config.ovpn inside a user-controlled .tblk directory and reads it as root without symlink validation. An attacker can create a .tblk configuration with a symlinked config.ovpn pointing to any file and request tunnelblickd to read it. This issue has been fixed in versions 9.0beta02.&lt;/p&gt;</content:encoded>
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