What’s Vulnerable › Vulnerabilities

CVE-2024-21671: vantage6 username timing attack

• Severity: low (CVSS 3.7 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: 2024-01-30 · updated 2026-06-17
• Weakness: CWE-208

Description

The vantage6 technology enables to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC). It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks. Version 4.2.0 patches this vulnerability.

Affected products

• vantage6: before 4.2.0 — fixed in 4.2.0

How to fix

Upgrade to a fixed version: vantage6 4.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/vantage6/vantage6/commit/389f416c445da4f2438c72f34c3b1084485c4e30
• https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53
• https://github.com/vantage6/vantage6/commit/389f416c445da4f2438c72f34c3b1084485c4e30
• https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53

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