https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-09T19:43:19.974052+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-218821 EUVD-2026-218821 2026-10-09T19:43:20.052834+00:00 EUVD-2026-218821 https://cve.radiocsirt.org/vuln/fkie_cve-2023-28436 fkie_cve-2023-28436 2026-10-09T19:43:20.052892+00:00

Tailscale is software for using Wireguard and multi-factor authentication (MFA). A vulnerability identified in the implementation of Tailscale SSH starting in version 1.34.0 and prior to prior to 1.38.2 in FreeBSD allows commands to be run with a higher privilege group ID than that specified in Tailscale SSH access rules. A difference in the behavior of the FreeBSD `setgroups` system call from POSIX meant that the Tailscale client running on a FreeBSD-based operating system did not appropriately restrict groups on the host when using Tailscale SSH. When accessing a FreeBSD host over Tailscale SSH, the egid of the tailscaled process was used instead of that of the user specified in Tailscale SSH access rules.

Tailscale SSH commands may have been run with a higher privilege group ID than that specified in Tailscale SSH access rules if they met all of the following criteria: the destination node was a FreeBSD device with Tailscale SSH enabled; Tailscale SSH access rules permitted access for non-root users; and a non-interactive SSH session was used.

Affected users should upgrade to version 1.38.2 to remediate the issue.

 https://cve.radiocsirt.org/vuln/ghsa-vfgq-g5x8-g595 GHSA-vfgq-g5x8-g595 — Non-interactive Tailscale SSH sessions on FreeBSD may use the effective group ID of the tailscaled process 2026-10-09T19:43:20.052944+00:00

Affected: Go: tailscale.com

A vulnerability identified in the implementation of Tailscale SSH in FreeBSD allowed commands to be run with a higher privilege group ID than that specified by Tailscale SSH access rules.

**Affected platforms**: FreeBSD

**Patched Tailscale client versions**: v1.38.2 or later

### What happened? A difference in the behavior of the FreeBSD `setgroups` system call from POSIX meant that the Tailscale client running on a FreeBSD-based operating system did not appropriately restrict groups on the host when using Tailscale SSH. When accessing a FreeBSD host over Tailscale SSH, the egid of the tailscaled process was used instead of that of the user specified in Tailscale SSH access rules.

### Who is affected? 9 tailnets with 22 FreeBSD nodes running Tailscale SSH since Tailscale v1.34 (released on 2022-12-04) may have had Tailscale SSH sessions with a higher privilege group ID than that specified in Tailscale SSH access rules.

We have notified the affected organizations where we have [security contacts](https://tailscale.com/kb/1224/contact-preferences/#setting-the-security-issues-email).

### What is the impact? Tailscale SSH commands may have been run with a higher privilege group ID than that specified in Tailscale SSH access rules if they met all of the following criteria: * The destination node was a FreeBSD device with Tailscale SSH enabled; * Tailscale SSH access rules permitted access for non-root users; and * A non-interactive SSH session was used.

### What do I need t…

 https://cve.radiocsirt.org/vuln/gsd-2023-28436 gsd-2023-28436 2026-10-09T19:43:20.052993+00:00 gsd-2023-28436