CVE-2026-47273 - pam_usb: XPath injection via PAM-supplied identifiers in pam_usb configuration queries

CVE-2026-47273 - pam_usb: XPath injection via PAM-supplied identifiers in pam_usb configuration queries

https://cvefeed.io/rssfeed/latest.atom / Wed, 05/27/2026 - 23:25
CVE ID :CVE-2026-47273
Published : May 27, 2026, 8:16 p.m. | 44 minutes ago
Description :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.
Severity: 6.5 | MEDIUM
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