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TI-2025-28447 Aliases CVE-2025-43863GHSA-j6g5-p62x-58hw

vantage6 lacks brute-force protection on change password functionality

Priority LOW 10CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-307.

Summary

vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00466 40th percentileScored 2026-11-07
Fix Fixed vantage6 (vantage6): 4.11.0vantage6 (PyPI): 4.11.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vantage6vantage6before 4.11.04.11.0Patch availableCNA
—vantage6 (PyPI)before 4.11.04.11.0Patch availableGHSA-j6g5-p62x-58hw
  • vantage6 Vendorvantage6 Affected before 4.11.0 Fixed in 4.11.0 Patch available CNA
  • vantage6 (PyPI) Vendor— Affected before 4.11.0 Fixed in 4.11.0 Patch available GHSA-j6g5-p62x-58hw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:vantage6:vantage6:*:*:*:*:*:*:*:*before 4.11.0Vulnerablevantage6
  • cpe:2.3:a:vantage6:vantage6:*:*:*:*:*:*:*:* Versions before 4.11.0 Vulnerable ·vantage6

Remediation

  • Fix · CNA vantage6 (vantage6) Fixed in 4.11.0
  • Fix · GHSA-j6g5-p62x-58hw vantage6 (PyPI) Fixed in 4.11.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-43863
  2. 2026-10-03 Alias added: GHSA-j6g5-p62x-58hw

References

Advisory 2

Other 3

  • TI-2024-14786 vantage6 unencrypted task can be created in encrypted collaboration CVSS 3.1MEDIUM 4.3
  • TI-2024-14378 vantage6 insecure SSH configuration for node and server containers CVSS 3.1CRITICAL 9.8
  • TI-2024-14374 Remote code execution in vantage6 CVSS 3.1HIGH 8.8
  • TI-2023-09727 Refresh tokens do not expire in Vantage6 CVSS 3.1HIGH 8.8
  • TI-2023-25773 vantage6 Node accepts non-whitelisted algorithms from malicious server CVSS 3.1HIGH 8.8
  • TI-2023-09728 vantage6's Pickle serialization is insecure CVSS 3.1HIGH 7.2
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences