CVE-2025-43866 Details
Description
vantage6 is an open-source infrastructure for privacy preserving analysis. The JWT secret key in the vantage6 server is auto-generated unless defined by the user. The auto-generated key is a UUID1, which is not cryptographically secure as it is predictable to some extent. This vulnerability is fixed in 4.11.0.
A vulnerability exists in the Vantage6 server's JSON Web Token (JWT) secret key generation. The default key is an auto-generated UUID1, which lacks cryptographic security and is somewhat predictable. This issue affects Vantage6 server versions prior to 4.11.0. Users can manually define a secure JWT secret key in the server configuration file.
Users can upgrade to Vantage6 server version 4.11.0 or later, or define a custom JWT secret key in the server configuration file.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 13, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/vantage6/vantage6/security/advisories/GHSA-m3mq-f375-5vgh | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-330 | Use of Insufficiently Random Values | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vantage6 vantage6 | < 4.11.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Sep 17, 2025 | Initial Analysis | [email protected] |
| Jun 12, 2025 | New CVE Received | [email protected] |