{"id":"CVE-2023-23930","aliases":["EUVD-2023-0257","GHSA-5m22-cfq9-86x6","PYSEC-2023-196"],"status":"published","title":"vantage6's Pickle serialization is insecure","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 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Advisory","advisory","web"]},{"url":"https://github.com/vantage6/vantage6/commit/e62f03bacf2247bd59eed217e2e7338c3a01a5f0","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/vantage6/vantage6/blob/0682c4288f43fee5bcc72dc448cdd99bd7e57f76/docs/release_notes.rst#400","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://medium.com/ochrona/python-pickle-is-notoriously-insecure-d6651f1974c9","tags":["x_refsource_MISC","x_transferred","Exploit","Permissions Required","Technical Description","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23930","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/vantage6/PYSEC-2023-196.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5m22-cfq9-86x6"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/23xxx/CVE-2023-23930.json","tags":["advisory"]},{"url":"https://github.com/vantage6/vantage6","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-23930","title":"vantage6's Pickle serialization is insecure","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.","status":"published","published":"2023-10-11T17:39:23.504Z","modified":"2024-09-18T15:22:09.61Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:35:20.812737Z"}],"euvd":[{"id":"EUVD-2023-0257","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.","status":"published","published":"2023-10-11T17:39:23Z","modified":"2024-09-18T15:22:09Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T00:28:21.470786Z"}],"ghsa":[{"id":"GHSA-5m22-cfq9-86x6","title":"Pickle serialization vulnerable to Deserialization of Untrusted Data","description":"### What\nWe 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). \n\nIn 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.\n\nSolution: we should use JSON instead\n\n### Impact\nAll users of vantage6 that post tasks with algorithms that use the default serialization. The default serialization is used by default with all algorithm wrappers.\n\n### Patches\nNot yet\n\n### Workarounds\nSpecify JSON serialization\n\n","status":"published","published":"2023-10-13T19:25:39Z","modified":"2024-11-18T23:11:29Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:38:20.833758Z"}],"nvd":[{"id":"CVE-2023-23930","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.","status":"published","published":"2023-10-11T18:15:10.037Z","modified":"2026-06-17T05:38:18.777Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:08:36.656095Z"}],"osv":[{"id":"CVE-2023-23930","title":"vantage6's Pickle serialization is insecure","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.","status":"published","published":"2023-10-11T17:39:23.504Z","modified":"2026-10-28T02:31:14.985664925Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:44:30.709518Z"},{"id":"GHSA-5m22-cfq9-86x6","title":"Pickle serialization vulnerable to Deserialization of Untrusted Data","description":"### What\nWe 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). \n\nIn 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.\n\nSolution: we should use JSON instead\n\n### Impact\nAll users of vantage6 that post tasks with algorithms that use the default serialization. The default serialization is used by default with all algorithm wrappers.\n\n### Patches\nNot yet\n\n### Workarounds\nSpecify JSON serialization\n\n","status":"published","published":"2023-10-13T19:25:39Z","modified":"2026-09-10T03:49:58.459835249Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:46:38.553953Z"},{"id":"PYSEC-2023-196","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.","status":"published","published":"2023-10-11T18:15:00Z","modified":"2023-11-08T04:11:42.967546Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:53.837392Z"}]}}