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    CVE-2026-44713

    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.

    Published:May 27, 2026
    Last Modified:May 30, 2026
    EPS:May 27, 2026
    EPSS Score:0.00023
    CVSS Score:8.8

    Affected Products

    Vendor
    Mcdope
    Product
    Pam Usb

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-48980 (CVSS 6.3) — pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2, getenv(…
    CVE-2026-48983 (CVSS 5.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48982 (CVSS 5.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48981 (CVSS 6.7) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48985 (CVSS 5.5) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below…
    CVE-2026-48986 (CVSS 4.7) — pam_usb provides hardware authentication for Linux using removable media. In pam_usb 0.9.1 and earlier, usb_ge…
    CVE-2026-48984 (CVSS 4.7) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below…
    CVE-2026-44712 (CVSS 8.2) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, a crafted U…
    CVE-2026-44709 (CVSS 7.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, pamusb-pine…
    CVE-2026-44710 (CVSS 4.6) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, src/device.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High