CVE-2026-44713

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Source

https://cve.org/CVERecord?id=CVE-2026-44713

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44713.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-44713

Aliases

GHSA-822m-whrh-vrj8

Published

2026-05-27T20:13:13.193Z

Modified

2026-07-08T08:13:29.761484006Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

pam_usb: Command injection via $TMUX environment variable leads to RCE as root

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44713.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-116",
        "CWE-78"
    ]
}

References

Affected packages

Git / github.com/mcdope/pam_usb

Affected ranges

Type

GIT

Repo

https://github.com/mcdope/pam_usb

Events

Introduced

Fixed

987f4f6ddf0a8c75ddd5f05b19b863220efe9005

Database specific

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.8.7"
        }
    ]
}

Affected versions

0.*

0.5.0

0.7.1

0.7.2

0.7.3

0.8.3

0.8.4

v0.*

v0.7.0

v0.8.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44713.json"