CVE-2023-23929: Refresh tokens do not expire in Vantage6

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-04 · updated 2026-06-17
Weakness: CWE-613

Description

vantage6 is a privacy preserving federated learning infrastructure for secure insight exchange. Currently, the refresh token is valid indefinitely. The refresh token should get a validity of 24-48 hours. A fix was released in version 3.8.0.

Affected products

vantage6: before 3.8.0 — fixed in 3.8.0

How to fix

Upgrade to a fixed version: vantage6 3.8.0. Check the vendor advisory for mitigations.

References

https://github.com/vantage6/vantage6/commit/48ebfca42359e9a6743e9598684585e2522cdce8
https://github.com/vantage6/vantage6/security/advisories/GHSA-4w59-c3gc-rrhp
https://github.com/vantage6/vantage6/commit/48ebfca42359e9a6743e9598684585e2522cdce8
https://github.com/vantage6/vantage6/security/advisories/GHSA-4w59-c3gc-rrhp

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