CVE-2026-44713
Severity CVSS v4.0:
Pending analysis
Type:
CWE-78
OS Command Injections
Publication date:
27/05/2026
Last modified:
27/05/2026
Description
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, src/tmux.c reads the user's $TMUX environment variable, splits it on commas, and interpolates the socket-path component directly into a shell command passed to popen(). Because the value is placed inside double-quotes without sanitisation, any value containing " terminates the quoted string and injects arbitrary shell syntax. popen() runs as root inside the PAM stack. This vulnerability is fixed in 0.8.7.
Impact
Base Score 3.x
8.80
Severity 3.x
HIGH