Dashboard / CVE-2026-47273

CVE-2026-47273

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-05-27 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: Low
I: High
A: None

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.

Weakness Classification (1)

References & Advisories (3)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

EPSS — Exploitation Probability

0.27%
Raw Score 0.002730
Percentile 19.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00273
2026-10-28
0.00273

Intelligence Sources

nvd ref →

External Links