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CVE-2024-21671

vantage6 username timing attack

3.7 LowFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.40%Up 0.4 points since Feb 8, 2024
90%50%10%1%

What each source reports

CVE List Score used 3.7

vantage6 username timing attack

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.

Record
CVE-2024-21671
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-208
Updated
2026-11-02
EUVDEUVD-2024-0170 3.7

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.

Record
EUVD-2024-0170
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-45gq-q4xh-cp53 3.7

vantage6 vulnerable to username timing attack

Impact

It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks

Workarounds

No

Record
GHSA-45gq-q4xh-cp53
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-208
Updated
2026-11-02
NVD 3.7

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.

Record
CVE-2024-21671
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-208, CWE-203
Updated
2026-11-02
OSV 3.7

vantage6 username timing attack

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.

Record
CVE-2024-21671
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-208
Updated
2026-11-02
OSVGHSA-45gq-q4xh-cp53 3.7

vantage6 vulnerable to username timing attack

Impact

It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks

Workarounds

No

Record
GHSA-45gq-q4xh-cp53
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-208
Updated
2026-11-02
OSVPYSEC-2024-31 3.7

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.

Record
PYSEC-2024-31
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVPYSEC-2026-2008 3.7

vantage6 vulnerable to username timing attack

Impact

It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks

Workarounds

No

Record
PYSEC-2026-2008
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
vantage6-server
PyPI
 before 4.2.0
4.2.0
vantage6-server
PyPI
 before 4.2.0, plus listed versions
0.0.00.0.0b00.0.0b10.0.0b31.0.0
Show 45 moreShow less
1.0.0b111.0.0b121.0.0b131.0.0b141.0.0b21.0.0b31.0.0b41.0.0b51.0.0b61.0.0b71.0.0b81.0.0b91.0.11.2.01.2.11.2.21.2.31.2.3.post12.0.02.0.0.post12.0.0a12.0.0a22.0.0a32.0.1rc12.0.1rc22.1.02.1.0rc12.1.12.1.22.1.3b12.1.3b22.1.3b32.1.3b42.2.02.2.0b12.2.0b22.2.0b32.2.0b42.2.12.2.102.2.112.2.122.2.22.2.32.2.4
4.2.0
vantage6
PyPI
 before 4.2.0, plus listed versions
0.0.00.0.0b00.0.0b10.0.0b31.0.0
Show 45 moreShow less
1.0.0a11.0.0a21.0.0b101.0.0b111.0.0b121.0.0b131.0.0b141.0.0b21.0.0b31.0.0b41.0.0b51.0.0b61.0.0b71.0.0b81.0.0b91.1.01.1.0rc11.1.0rc21.2.01.2.11.2.21.2.31.2.3.post22.0.02.0.0.post12.0.0a12.0.0a22.0.0a32.0.1rc12.0.1rc22.1.02.1.0rc12.1.12.2.02.2.0b12.2.0b22.2.0b32.2.0b42.2.12.2.102.2.112.2.122.2.22.2.32.2.4
4.2.0

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-21671 is a low vulnerability (CVSS 3.7) in Vantage6, published January 30, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. Fixed in vantage6-server 4.2.0.

References

This page doesn't list everything

Left out here: 299 versions. The JSON record has them.

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