Description
In wsl-pro-service before 0.1.19ubuntu3, the service component which runs as root inside each WSL instance attaches the instance to Ubuntu Pro by executing the pro client with the Ubuntu Pro token passed as a command-line argument (pro attach <token>). On systems where /proc is mounted without process-hiding mitigations (such as hidepid), which is the default in WSL, an unprivileged local user or process in the same WSL instance can read the token from /proc/<pid>/cmdline while the attach process is running. The leaked token could then be used to attach other machines to the victim's Ubuntu Pro subscription and gain unauthorized access to Ubuntu Pro services.
Published: 2026-09-29
Score: 5.7 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Tue, 29 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Description In wsl-pro-service before 0.1.19ubuntu3, the service component which runs as root inside each WSL instance attaches the instance to Ubuntu Pro by executing the pro client with the Ubuntu Pro token passed as a command-line argument (pro attach <token>). On systems where /proc is mounted without process-hiding mitigations (such as hidepid), which is the default in WSL, an unprivileged local user or process in the same WSL instance can read the token from /proc/<pid>/cmdline while the attach process is running. The leaked token could then be used to attach other machines to the victim's Ubuntu Pro subscription and gain unauthorized access to Ubuntu Pro services.
Title wsl-pro-service: Ubuntu Pro token exposed via process command-line arguments
Weaknesses CWE-214
References
Metrics cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-09-29T14:11:19.350Z

Reserved: 2026-09-28T23:44:11.787Z

Link: CVE-2026-102371

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-29T15:17:17.557

Modified: 2026-09-29T15:17:17.557

Link: CVE-2026-102371

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses