Unsafe deserialisation in the PKI implementation scheme of NVFlare

CRITICAL 9.8CVE-2022-31604 · GHSA-rcxc-3w2m-mp8h · PYSEC-2022-231 · Published 01/07/2022 · updated 17/06/2026

Package	Affected versions	Patched versions
nvflare PyPI	`< 2.1.2`	`2.1.2`
nvflare nvidia	`< 2.1.2`	`2.1.2`

Description

Impact

NVFLARE contains a vulnerability in its PKI implementation module, where The CA credentials are transported via pickle and no safe deserialization. The deserialization of Untrusted Data may allow an unprivileged network attacker to cause Remote Code Execution, Denial Of Service, and Impact to both Confidentiality and Integrity. All versions before 2.1.2 are affected.

CVSS Score = 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Patches

The patch will be included in nvflare==2.1.2

Workarounds

Replace pickle serialization with JSON and change the code accordingly

Additional information Issue Found by: Oliver Sellwood (@Nintorac)

NVD description

NVFLARE, versions prior to 2.1.2, contains a vulnerability in its PKI implementation module, where The CA credentials are transported via pickle and no safe deserialization. The deserialization of Untrusted Data may allow an unprivileged network attacker to cause Remote Code Execution, Denial Of Service, and Impact to both Confidentiality and Integrity.

References

NVIDIA/NVFlare security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2022-31604 · ADVISORY
NVIDIA/NVFlare commit fd018ee · WEB
NVIDIA/NVFlare · PACKAGE
pypa/advisory-database · WEB

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Package

Affected versions

Patched versions

nvflare

PyPI

< 2.1.2

2.1.2

nvflare

nvidia

< 2.1.2

2.1.2

Description

Impact

CVSS Score = 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Patches

The patch will be included in nvflare==2.1.2

Workarounds

Replace pickle serialization with JSON and change the code accordingly

Additional information Issue Found by: Oliver Sellwood (@Nintorac)

NVD description