What is CVE-2026-48981?

CVE-2026-48981 is a medium-severity vulnerability in Mcdope Pam_usb, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.7/10. Published 2026-06-18.

How severe is CVE-2026-48981?

Medium severity. CVSS v3 base score is 6.7 out of 10.

XXE in Mcdope Pam_usb

CVE-2026-48981

pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, pam_usb calls xmlReadFile() with flags=0 when loading the configuration file, allowing libxml2 to process external entity refere…

Vulnerability class: XXE (XML External Entity)

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L.

Affected products

Mcdope Pam_usb — versions < 0.9.2

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-48981?: CVE-2026-48981 is a medium-severity vulnerability in Mcdope Pam_usb, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.7/10. Published 2026-06-18.
How severe is CVE-2026-48981?: Medium severity. CVSS v3 base score is 6.7 out of 10.