What’s Vulnerable › Vulnerabilities
CVE-2025-43866: Vantage6 Server JWT secret not cryptographically secure
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-06-12 · updated 2026-06-17
- Weakness: CWE-330
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.
Affected products
- vantage6: before 4.11.0 — fixed in 4.11.0
How to fix
Upgrade to a fixed version: vantage6 4.11.0. Check the vendor advisory for mitigations.
References
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