{"id":"CVE-2026-48980","aliases":["EUVD-2026-37937","GHSA-qr83-mf3h-fvqr"],"status":"published","title":"pam_usb: getenv() used in PAM context allows environment variable injection into local-check logic","description":"pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2,  getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or remote, and a PAM module that runs in the context of setuid binaries (sudo, su), getenv() returns attacker-controlled values whenever the process environment has been manipulated by a local user. This issue has been fixed in version 0.9.2.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00175,"percentile":0.07076,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-454","CWE-807"],"published":"2026-06-18T19:26:05Z","modified":"2026-10-28T11:11:26Z","products":[{"vendor":"mcdope","product":"pam_usb"}],"references":[{"url":"https://github.com/mcdope/pam_usb/security/advisories/GHSA-qr83-mf3h-fvqr","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/mcdope/pam_usb/releases/tag/0.9.2","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48980.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48980","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-48980","title":"pam_usb: getenv() used in PAM context allows environment variable injection into local-check logic","description":"pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2,  getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or remote, and a PAM module that runs in the context of setuid binaries (sudo, su), getenv() returns attacker-controlled values whenever the process environment has been manipulated by a local user. This issue has been fixed in version 0.9.2.","status":"published","published":"2026-06-18T19:26:05.34Z","modified":"2026-06-18T20:25:31.988Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-454","CWE-807"],"updated_at":"2026-11-02T13:50:49.872037Z"}],"euvd":[{"id":"EUVD-2026-37937","description":"pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2,  getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or remote, and a PAM module that runs in the context of setuid binaries (sudo, su), getenv() returns attacker-controlled values whenever the process environment has been manipulated by a local user. This issue has been fixed in version 0.9.2.","status":"published","published":"2026-06-18T19:26:05Z","modified":"2026-06-18T20:25:31Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:36.276608Z"}],"nvd":[{"id":"CVE-2026-48980","description":"pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2,  getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or remote, and a PAM module that runs in the context of setuid binaries (sudo, su), getenv() returns attacker-controlled values whenever the process environment has been manipulated by a local user. This issue has been fixed in version 0.9.2.","status":"published","published":"2026-06-18T20:16:14.273Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-454","CWE-807"],"updated_at":"2026-11-02T14:12:24.912854Z"}],"osv":[{"id":"CVE-2026-48980","title":"pam_usb: getenv() used in PAM context allows environment variable injection into local-check logic","description":"pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2,  getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or remote, and a PAM module that runs in the context of setuid binaries (sudo, su), getenv() returns attacker-controlled values whenever the process environment has been manipulated by a local user. This issue has been fixed in version 0.9.2.","status":"published","published":"2026-06-18T19:26:05.34Z","modified":"2026-10-28T11:11:26.257303459Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-454","CWE-807"],"updated_at":"2026-11-02T15:45:07.060148Z"}]}}