Vantage6: 2FA can be circumvented with hacked email access
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- 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. Prior to version 5.0.0, if an attacker hacks into a vantage6 user's email account, they can 1) reset the password via email and then 2) reset the 2FA token via email. This way they reduce 2FA to 1FA (email access). Note that most email providers require 2FA to access email, so this issue is not very likely to cause issues. Version 5.0.0 fixes the issue. No known workarounds are available.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| vantage6 | vantage6 | before 5.0.0 | 5.0.0 | Patch available | CNA |
| — | vantage6 (PyPI) | before 5.0.0 | 5.0.0 | Patch available | GHSA-4c5c-2vc3-x5w2 |
- vantage6 Vendorvantage6 Affected before 5.0.0 Fixed in 5.0.0 Patch available CNA
- vantage6 (PyPI) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-4c5c-2vc3-x5w2
Remediation
- Fix · CNA vantage6 (vantage6) Fixed in 5.0.0
- Fix · GHSA-4c5c-2vc3-x5w2 vantage6 (PyPI) Fixed in 5.0.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-27928
- 2026-10-03 Alias added: GHSA-4c5c-2vc3-x5w2
- 2026-11-03 2 new references · GHSA-4c5c-2vc3-x5w2
References
Other 5
- https://github.com/vantage6/vantage6/security/advisories/GHSA-4c5c-2vc3-x5w2
- https://github.com/vantage6/vantage6/issues/1932
- https://github.com/vantage6/vantage6/blob/main/docs/release_notes.rst#500
- https://github.com/pypa/advisory-database/tree/main/vulns/vantage6/PYSEC-2026-3398.yaml
- https://github.com/vantage6/vantage6
More vantage6 vulnerabilities
- 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-2026-39377 vantage6 node has an Improper Access Control issue CVSS 4.0MEDIUM 6.9
Sources
- CVE-2024-27928 · CVE Program
- CVE-2024-27928 · NVD
- FIRST EPSS
- GHSA-4c5c-2vc3-x5w2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences