What’s Vulnerable › Vulnerabilities

CVE-2026-54445: Vantage6: Set admin user and password from environment or configuration

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-17 · updated 2026-06-23
• Weakness: CWE-204

Description

vantage6 is an open-source infrastructure for privacy preserving analysis. Versions prior to 5.0.0 provide an initial user with username `root` and password `root`. This is not ideal because attackers know that almost all vantage6 servers have a user with username `root` that probably has admin rights, and the initial password is very weak and it is possible that administrators forget to reset it. Version 5.0.0 fixes the issue. As a workaround, it is possible to delete the `root` user after it has been used to create other users.

Affected products

• vantage6: before 5.0.0

References

• https://github.com/vantage6/vantage6/blob/main/docs/release_notes.rst#500
• https://github.com/vantage6/vantage6/issues/1932
• https://github.com/vantage6/vantage6/security/advisories/GHSA-fgmc-2hqj-86v4

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