6.9

CVSS Score

4.0

-

CVSS Score

Basic Information

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CVE-2026-54445

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

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.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-54445

CVE-2026-54445:

6.9

CVSS Score

4.0

-

CVSS Score

Basic Information

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Technical Details

SSVC / BOD 26-04 ↗

Exploitation NoneAutomatable NoTech Impact Total

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Package Name	Ecosystem	Vulnerable Versions	First Patched Version
vantage6	pip	<= 4.2.3	5.0.0

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability lies in the use of hardcoded default credentials for the initial administrator user. The analysis of the provided patch clearly shows that the setup_first_user method within the ServerApp class is responsible for this user creation. The original code used a static password from the SUPER_USER_INFO dictionary, which is 'root'. The patch modifies this behavior to allow the password to be set from a file via an environment variable, thus mitigating the vulnerability. Therefore, the ServerApp.setup_first_user function is the exact location where the vulnerable code exists and is the function that would be observed in a runtime profile during the initial setup of a vulnerable vantage6 server.

Vulnerable functions

ServerApp.setup_first_user

vantage6-server/vantage6/server/__init__.py

The function `setup_first_user` creates the initial 'root' user. In the vulnerable version, it assigns a hardcoded, weak default password ('root') taken from `SUPER_USER_INFO['password']`. This allows an attacker with knowledge of this default password to gain administrative access to the vantage6 server.

Vulnerability Intelligence
Miggo AI

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WAF Protection Rules

WAF Rule

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Reasoning

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