CVE-2024-27928: Vantage6 2FA Can Be Circumvented With Vulnerability

MODERATE
Advisory Identifier: GHSA-4c5c-2vc3-x5w2
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CWE-308
Published
Advisory Summary

CVE-2024-27928 is a MODERATE 2fa can be circumvented with vulnerability (CWE-308: Use of Single-factor Authentication) affecting Vantage6 libraries in the PyPI ecosystem. The issue involves 2fa can be circumvented with hacked email access. Remediation is available by upgrading affected packages to version 5.0.0.

CVE-2024-27928 at a Glance

CVE Identifier CVE-2024-27928
GHSA Identifier GHSA-4c5c-2vc3-x5w2
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-308: Use of Single-factor Authentication
Affected Product Vantage6
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2024-27928

To remediate this vulnerability, upgrade all affected Vantage6 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vantage6 fixed: 5.0.0 
pip install vantage6>=5.0.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show vantage6

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-27928, inspect your installed packages using pip:

pip show vantage6

Analyze the terminal output to locate any version of Vantage6 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.0), your application is affected.

Note: The pip show vantage6 command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-308: Use of Single-factor Authentication, where the product uses an authentication algorithm that uses a single factor (e.g., a password) in a security context that should require more than one factor. In Vantage6, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact 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. ### Proposed solution Many web apps do not provide functionality to reset 2FA token (probably for this reason), but provide recovery codes as well. It would be better to provide these recovery codes to the user 1 time and then delete the option to reset it. An alternative may be to only let server administrators reset 2FA token. However, this has as disadvantage that a hacked email account may send messages to the server admin to reset them, which they may fall for. ### Patches No ### Workarounds No

CVE-2024-27928 Affected Vantage6 Versions

1 component(s)
Fixed Versions:
5.0.0
Product / Package Ecosystem Affected Versions Fixed Version
vantage6
pypi/vantage6
PyPI
< 5.0.0
5.0.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vantage6/vantage6/security/advisories/GHSA-4c5c-2vc3-x5w2
Vantage6 Source Repository REPOSITORY
https://github.com/vantage6/vantage6/issues/1932
Vantage6 Source Repository REPOSITORY
https://github.com/vantage6/vantage6
Vantage6 Source Repository REPOSITORY
https://github.com/vantage6/vantage6/blob/main/docs/release_notes.rst#500

Frequently Asked Questions

What is CVE-2024-27928?
CVE-2024-27928 is a security vulnerability in Vantage6 involving 2FA can be circumvented with hacked email access under CWE-308: Use of Single-factor Authentication.
Which Vantage6 versions are affected?
Affected versions include releases prior to 5.0.0 across affected packages: vantage6.
What version fixes CVE-2024-27928?
Upgrading to 5.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vantage6 affected?
Yes, vantage6 is affected in releases prior to 5.0.0. Upgrade your dependency to 5.0.0 or later.
What CWE is associated with CVE-2024-27928?
CVE-2024-27928 is classified under CWE-308: Use of Single-factor Authentication (The product uses an authentication algorithm that uses a single factor (e.g., a password) in a security context that should require more than one factor.).
How can I check PyPI dependencies for CVE-2024-27928?
Run the dependency tree command: 'pip show vantage6'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4c5c-2vc3-x5w2",
  "modified" : "2026-06-05T15:24:35Z",
  "published" : "2026-06-05T15:24:35Z",
  "aliases" : [ "CVE-2024-27928" ],
  "summary" : "Vantage6: 2FA can be circumvented with hacked email access",
  "details" : "### Impact\nIf 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). \n\nNote that most email providers require 2FA to access email, so this issue is not very likely to cause issues.\n\n### Proposed solution\n\nMany web apps do not provide functionality to reset 2FA token (probably for this reason), but provide recovery codes as well. It would be better to provide these recovery codes to the user 1 time and then delete the option to reset it.\n\nAn alternative may be to only let server administrators reset 2FA token. However, this has as disadvantage that a hacked email account may send messages to the server admin to reset them, which they may fall for.\n\n### Patches\nNo\n\n### Workarounds\nNo",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "vantage6"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vantage6/vantage6/security/advisories/GHSA-4c5c-2vc3-x5w2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vantage6/vantage6/issues/1932"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vantage6/vantage6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vantage6/vantage6/blob/main/docs/release_notes.rst#500"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-308" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-05T15:24:35Z",
    "nvd_published_at" : null
  }
}