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TI-2025-28450 Aliases CVE-2025-43866GHSA-m3mq-f375-5vgh

Vantage6 Server JWT secret not cryptographically secure

Priority LOW 10CWE-330Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00387 33rd percentileScored 2026-11-07
Fix Fixed vantage6 (vantage6): 4.11vantage6-server (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 4.114.11Patch availableCNA
—vantage6-server (PyPI)before 4.11.04.11.0Patch availableGHSA-m3mq-f375-5vgh
  • vantage6 Vendorvantage6 Affected before 4.11 Fixed in 4.11 Patch available CNA
  • vantage6-server (PyPI) Vendor— Affected before 4.11.0 Fixed in 4.11.0 Patch available GHSA-m3mq-f375-5vgh

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
  • Fix · GHSA-m3mq-f375-5vgh vantage6-server (PyPI) Fixed in 4.11.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-43866
  2. 2026-10-03 Alias added: GHSA-m3mq-f375-5vgh

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