CVE-2026-6369 MEDIUM

CVE-2026-6369: Exposed Session Token in canonical-livepatch client snap

Vendor Canonical
Product canonical-livepatch
Weakness CWE-306 · Missing auth
Published April 20, 2026
Last update April 20, 2026

CVSS base score

5.7/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:L/SA:L

What the vulnerability does

01Description

An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to obtain a sensitive, root-level authentication token by sending an unauthenticated request to the livepatchd.sock Unix domain socket. This vulnerability is exploitable on systems where an administrator has already enabled the Livepatch client with a valid Ubuntu Pro subscription. This token allows an attacker to access Livepatch services using the victim's credentials, as well as potentially cause issues to the Livepatch server.

Key dates

02Disclosure timeline

April 20, 2026 CVE published
April 20, 2026 Record updated