CVE-2026-9494 Affecting ubuntu-advantage-tools package, versions <37.2ubuntu0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2604-UBUNTUADVANTAGETOOLS-17995438
- published16 Jul 2026
- disclosed16 Jul 2026
Introduced: 16 Jul 2026
CVE-2026-9494 (opens in a new tab)How to fix?
Upgrade Ubuntu:26.04 ubuntu-advantage-tools to version 37.2ubuntu0.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ubuntu-advantage-tools package and not the ubuntu-advantage-tools package as distributed by Ubuntu.
See How to fix? for Ubuntu:26.04 relevant fixed versions and status.
An information disclosure vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools). The client validates Ubuntu Pro APT credentials by executing /usr/lib/apt/apt-helper using the download-file command. During this process, the secret bearer token is embedded directly in the cleartext URL component passed via the command-line arguments (argv), resulting in a URL format such as https://bearer:<token>@esm.ubuntu.com/.../. On systems utilizing a default-mounted /proc file system where process-hiding mitigations (such as hidepid) are disabled, an unprivileged local attacker can monitor system processes and read the sensitive bearer token directly from /proc/cmdline while the helper process is actively running. This leaked token can subsequently be used to gain unauthorized access to the victim's Ubuntu Pro or Expanded Security Maintenance (ESM) repositories.