Skip to main content
VulnerabilityPublished Updated

CVE-2026-102371: Ubuntu Pro for WSL wsl-pro-service · Invocation of process using visible sensitive information

Affects Ubuntu Pro for WSL wsl-pro-serviceSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 5.7 Medium · fixed in Ubuntu Pro for WSL package updates : update the Ubuntu Pro for WSL wsl-pro-service package when convenient.

Data as of 12 Nov 2026, 23:24 UTC

CVSS 4.0 base score
5.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.1.19ubuntu2, 0.1.18~24.04.3, 0.1.18~22.04.2 +1
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade the Ubuntu Pro for WSL wsl-pro-service package and wsl-pro-service to 0.1.19ubuntu2, 0.1.18~24.04.3, 0.1.18~22.04.2 or 0.1.18~20.04.2.

Affected software

ProductAffectedFixed in
Ubuntu Pro for WSLwsl-pro-serviceAffected
  • >=0.1.1 <0.1.19ubuntu2
Fixed in
  • 0.1.19ubuntu2
Ubuntu Pro for WSLwsl-pro-serviceAffected
  • >=0.1.1 <0.1.18~24.04.3
Fixed in
  • 0.1.18~24.04.3
Ubuntu Pro for WSLwsl-pro-serviceAffected
  • >=0.1.1 <0.1.18~22.04.2
Fixed in
  • 0.1.18~22.04.2
Ubuntu Pro for WSLwsl-pro-serviceAffected
  • >=0.1.1 <0.1.18~20.04.2
Fixed in
  • 0.1.18~20.04.2
GitHubwsl-pro-servicepkg:github/wsl-pro-serviceOther threatsAffected
  • >=0.1.1 <0.1.19ubuntu2
  • >=0.1.1 <0.1.18~24.04.3
  • >=0.1.1 <0.1.18~22.04.2
  • >=0.1.1 <0.1.18~20.04.2
Fixed in
  • 0.1.19ubuntu2
  • 0.1.18~24.04.3
  • 0.1.18~22.04.2
  • 0.1.18~20.04.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fixed version of the Ubuntu Pro for WSL service component is available starting from version 0.1.19ubuntu3. Users should upgrade to this or later versions to prevent token leakage. Until upgraded, consider applying process-hiding mitigations such as mounting /proc with hidepid options to restrict access to process command lines. No vendor advisory content was provided to indicate alternative mitigations or that no action is required.

Description

CVE-2026-102371 is a medium severity vulnerability in Canonical's Ubuntu Pro for WSL service component before version 0.1.19ubuntu3. The service runs as root inside each WSL instance and attaches the instance to Ubuntu Pro by executing the pro client with the subscription token passed as a command-line argument. On systems where /proc is mounted without process-hiding mitigations (the default in WSL), unprivileged local users can read the token from the command line of the running attach process. This token leakage could allow unauthorized attachment of other machines to the victim's Ubuntu Pro subscription, granting access to Ubuntu Pro services.

References

Community reviews

Loading reviews…