What is CVE-2026-63644?

CVE-2026-63644 is a high-severity vulnerability in Xddxdd Bird-Lg-Go, classified under Argument Injection. CVSS score: 7.5/10. Published 2026-11-09.

How severe is CVE-2026-63644?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Xddxdd Bird-Lg-Go

CVE-2026-63644

bird-lg-go is a BIRD looking glass in Go. Prior to version 1.4.7, unsanitized input path enables arbitrary local file read, allowing an unauthenticated remote attacker to read sensitive files such as /etc/shadow and /root/.bash_history. This issue has been patched in version 1.4.7.

Published 2026-11-09.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Xddxdd Bird-Lg-Go — versions < 1.4.7

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-63644?: CVE-2026-63644 is a high-severity vulnerability in Xddxdd Bird-Lg-Go, classified under Argument Injection. CVSS score: 7.5/10. Published 2026-11-09.
How severe is CVE-2026-63644?: High severity. CVSS v3 base score is 7.5 out of 10.