CVE-2021-44512: Tmate Tmate-SSH-Server

High severity, CVSS 7.0. EPSS: 0.3% chance of exploitation in the next 30 days.

World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write session ID from a read-only session symlink in this directory.

Affected products

• Tmate Tmate-SSH-Server: up to and including 2.3.0

Published 2021-12-07. Last modified 2026-06-17.