by Kastro
Paper/Archive/CVE-2025-43863

CVE-2025-43863

vantage6 vantage6 — vantage6 lacks brute-force protection on change password functionality

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 40.3.403 × 208.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
vantage6< 4.11.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)1.7CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgithub.com/vantage6/vantage6/security/advisories/GHSA-j6g5-p62x-58hw