https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-21T15:08:43.581947+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2023-23930 CVE-2023-23930 — vantage6's Pickle serialization is insecure 2026-10-21T15:08:43.583717+00:00

Affected: vantage6

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.

 https://cve.radiocsirt.org/vuln/ghsa-5m22-cfq9-86x6 GHSA-5m22-cfq9-86x6 — Pickle serialization vulnerable to Deserialization of Untrusted Data 2026-10-21T15:08:43.583779+00:00

Affected: PyPI: vantage6

### What We are using pickle as default serialization module but that has known security issues (see e.g. https://medium.com/ochrona/python-pickle-is-notoriously-insecure-d6651f1974c9).

In summary, it is not advisable to open Pickles that you create yourself locally. In vantage6, algorithms use pickles to send aggregated data around and to pack algorithm input or output. All of the Python algorithms that use the wrappers with default serialization are therefore vulnerable to this issue.

Solution: we should use JSON instead

### Impact All users of vantage6 that post tasks with algorithms that use the default serialization. The default serialization is used by default with all algorithm wrappers.

### Patches Not yet

### Workarounds Specify JSON serialization