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    CVE-2026-47274

    pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, multiple pam_usb helper tools resolved external binaries through the PATH environment variable rather than using absolute paths. An attacker who can influence the process environment during PAM authentication or tool execution could substitute malicious binaries. The affected tools are pamusb-check (src/tmux.c), pamusb-conf (tools/pamusb-conf), and pamusb-keyring-unlock-gnome (tools/pamusb-keyring-unlock-gnome). This vulnerability is fixed in 0.9.0.

    Published:May 27, 2026
    Last Modified:May 30, 2026
    EPS:May 27, 2026
    EPSS Score:0.0002
    CVSS Score:6.3

    Affected Products

    Vendor
    Mcdope
    Product
    Pam Usb

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-427 Uncontrolled Search Path Element

    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