CVE-2026-47273

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Source
https://cve.org/CVERecord?id=CVE-2026-47273
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47273.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-47273
Aliases
  • GHSA-vfj3-5h5v-6g93
Published
2026-05-27T20:03:39.297Z
Modified
2026-08-04T17:47:07.677574Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
Summary
pam_usb: XPath injection via PAM-supplied identifiers in pam_usb configuration queries
Details

pamusb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, pamusb builds XPath expressions from user-supplied identifiers (PAM username, service name) and device-supplied identifiers (USB device serial, model, vendor) to query /etc/pamusb.conf. These identifiers were not validated for XPath metacharacters, allowing injection of arbitrary XPath predicates. This vulnerability is fixed in 0.9.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47273.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-91"
    ]
}
References

Affected packages

Git / github.com/mcdope/pam_usb

Affected ranges

Type
GIT
Repo
https://github.com/mcdope/pam_usb
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c1eba240c30dc377619492affca6f0c130e4fa9e
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.9.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*
0.5.0
0.7.1
0.7.2
0.7.3
0.8.3
0.8.4
0.8.7
v0.*
v0.7.0
v0.8.0

Database specific

vanir_signatures_modified 
"2026-08-04T17:47:07Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "target": {
            "file": "src/version.h"
        },
        "id": "CVE-2026-47273-10178184",
        "signature_type": "Line",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "206666566369348414222264955120073332973"
            ]
        },
        "source": "https://github.com/mcdope/pam_usb/commit/c1eba240c30dc377619492affca6f0c130e4fa9e"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47273.json"