What’s Vulnerable › Vulnerabilities

CVE-2023-23930: vantage6's Pickle serialization is insecure

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-10-11 · updated 2026-06-17
• Weakness: CWE-502

Description

vantage6 is privacy preserving federated learning infrastructure. Versions prior to 4.0.0 use pickle, which has known security issue, as a default serialization module but that has known security issues. All users of vantage6 that post tasks with the default serialization are affected. Version 4.0.0 contains a patch. Users may specify JSON serialization as a workaround.

Affected products

• vantage6: before 4.0.2 — fixed in 4.0.2

How to fix

Upgrade to a fixed version: vantage6 4.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/vantage6/vantage6/blob/0682c4288f43fee5bcc72dc448cdd99bd7e57f76/docs/release_notes.rst#400
• https://github.com/vantage6/vantage6/commit/e62f03bacf2247bd59eed217e2e7338c3a01a5f0
• https://github.com/vantage6/vantage6/security/advisories/GHSA-5m22-cfq9-86x6
• https://medium.com/ochrona/python-pickle-is-notoriously-insecure-d6651f1974c9
• https://github.com/vantage6/vantage6/blob/0682c4288f43fee5bcc72dc448cdd99bd7e57f76/docs/release_notes.rst#400
• https://github.com/vantage6/vantage6/commit/e62f03bacf2247bd59eed217e2e7338c3a01a5f0
• https://github.com/vantage6/vantage6/security/advisories/GHSA-5m22-cfq9-86x6
• https://medium.com/ochrona/python-pickle-is-notoriously-insecure-d6651f1974c9

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