Improper input validation in Canonical Ubuntu 14.04 Lts
CVE-2026-11386
An input validation and injection vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools). The client constructs APT source files (such as /etc/apt/sources.list.d/ubuntu-.list or their DEB822 equivalents) usin…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Canonical Ubuntu 14.04 Lts — versions 19.7ubuntu0.1
- Canonical Ubuntu 16.04 Lts — versions 37.1ubuntu0~16.04.1
- Canonical Ubuntu 18.04 Lts — versions 37.1ubuntu0~18.04.1
- Canonical Ubuntu 20.04 Lts — versions 37.1ubuntu0~20.04.1
- Canonical Ubuntu 22.04 Lts — versions 37.2ubuntu~22.04.1
- Canonical Ubuntu 24.04 Lts — versions 37.2ubuntu~24.04.1
- Canonical Ubuntu 26.04 Lts — versions 37.2ubuntu0.1
- Canonical Ubuntu-pro-client (Ubuntu-advantage-tools) — versions 0
Weakness classification (CWE)
References
- security@ubuntu.com (vdb-entry)
Frequently asked questions
- What is CVE-2026-11386?
- CVE-2026-11386 is a critical-severity vulnerability in Canonical Ubuntu 14.04 Lts, classified under Improper Input Validation. CVSS score: 9.0/10. Published 2026-07-16.
- How severe is CVE-2026-11386?
- Critical severity. CVSS v3 base score is 9.0 out of 10.