Is CVE-2026-102371 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-102371 being exploited in the wild.

How severe is CVE-2026-102371?

Informational severity, published 29 September 2026.

Which products and versions are affected?

Canonical Wsl-Pro-Service before 0.1.19ubuntu3.

Is there a fix for CVE-2026-102371?

A patch was published on 2026-09-17: Token passed via ephemeral config file instead of CLI argument Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-102371 attacked?

It is attacked with local access.

Am I affected by CVE-2026-102371?

Check whether you run Canonical Wsl-Pro-Service at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-102371: wsl-pro-service command-line token disclosure

CVE-2026-102371 · Severity: info · Published 2026-09-29

The wsl-pro-service component in Ubuntu Pro for WSL passes authentication tokens to the Ubuntu Pro client via command-line arguments, which are readable by unprivileged users through /proc on systems without process hiding protections. An attacker could read the token from process arguments and use it to attach unauthorized machines to a victim's Ubuntu Pro subscription, gaining access to restricted services and resources.

Vendors: Canonical.

Quick answers

Is CVE-2026-102371 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-102371 being exploited in the wild.
How severe is CVE-2026-102371?: Informational severity, published 29 September 2026.
Which products and versions are affected?: Canonical Wsl-Pro-Service before 0.1.19ubuntu3.
Is there a fix for CVE-2026-102371?: A patch was published on 2026-09-17: Token passed via ephemeral config file instead of CLI argument Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-102371 attacked?: It is attacked with local access.
Am I affected by CVE-2026-102371?: Check whether you run Canonical Wsl-Pro-Service at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The service passes the Ubuntu Pro token as a CLI argument to the pro attach command (pro attach <token>), exposing it in /proc/<pid>/cmdline. This affects systems without /proc hidepid mitigations, which is the default in WSL. A local unprivileged attacker can read the token while the attach process runs and reuse it to attach other systems to the victim's Ubuntu Pro account.

Affected products

Canonical wsl-pro-service before 0.1.19ubuntu3

Timeline

2026-09-29: disclosed
2026-09-17: patched: Token passed via ephemeral config file instead of CLI argument

References

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