🛡️ CVE-2026-44713
🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-78 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE CWE-78
Public Exploit ✅ No
Source NVD
Published 2026-05-27
Updated 2026-06-02
Modified 2026-05-28
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

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