CVE-2026-47273

Published: Mag 27, 2026 Last Modified: Mag 27, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: none

Description

AI Translation Available

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, pam_usb 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.

91

XML Injection (aka Blind XPath Injection)

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability
Potential Impacts:
Execute Unauthorized Code Or Commands Read Application Data Modify Application Data
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/mcdope/pam_usb/commit/721fed08a3596cb5b4…
https://github.com/mcdope/pam_usb/commit/721fed08a3596cb5b4671ad702f8fdc12dcc74…
https://github.com/mcdope/pam_usb/pull/311
https://github.com/mcdope/pam_usb/pull/311
https://github.com/mcdope/pam_usb/security/advisories/GHSA-…
https://github.com/mcdope/pam_usb/security/advisories/GHSA-vfj3-5h5v-6g93