# CVE-2022-31605: PYSEC-2022-232 - NVFLARE, versions prior to 2.1.2, contains a vulnerability in its utils module, where YAML files are loaded via yaml.load() instead of yaml.

Source: https://junglewise.ai/threats/cve-2022-31605-unsafe-yaml-deserialization-in-nvflare  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-07-01  
License: CC BY 4.0 with a link back

CVE-2022-31605 · Severity: low · CVSS 3.1 · Published 2022-07-01

NVFLARE, versions prior to 2.1.2, contains a vulnerability in its utils module, where YAML files are loaded via yaml.load() instead of yaml.safe_load(). 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.

Technologies: [nvflare (PyPI)](https://junglewise.ai/threats/technologies/nvflare). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2022-31605 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2022-31605 being exploited in the wild.

**How severe is CVE-2022-31605?** Low severity, with a CVSS score of 3.1, published 1 July 2022.

**Which products and versions are affected?** nvflare (PyPI) ECOSYSTEM:introduced=0,fixed=2.1.2.

**Is there a fix for CVE-2022-31605?** Yes. nvflare (PyPI): upgrade to 2.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2022-31605?** Check whether you run nvflare (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- nvflare (PyPI): upgrade to 2.1.2 or later

  ```sh
  pip install "nvflare>=2.1.2"
  ```


## Affected products

- nvflare (PyPI) ECOSYSTEM:introduced=0,fixed=2.1.2

## Identifiers

- CVE-2022-31605
- GHSA-hrf3-622q-8366
- PYSEC-2022-232

## Related threats

- [PYSEC-2026-695 - Allocation of Resources Without Limits or Throttling in nvflare](https://junglewise.ai/threats/cve-2022-21822-allocation-of-resources-without-limits-or-throttling-in-nvflare)
- [NVIDIA NVFlare Dashboard authorization bypass in user management system](https://junglewise.ai/threats/cve-2026-24178-nvidia-nvflare-dashboard-authorization-bypass-in-user-management)
- [NVFLARE unsafe deserialization due to Pickle](https://junglewise.ai/threats/cve-2022-34668-nvflare-unsafe-deserialization-due-to-pickle)
- [Unsafe deserialisation in the PKI implementation scheme of NVFlare](https://junglewise.ai/threats/cve-2022-31604-unsafe-deserialisation-in-the-pki-implementation-scheme-of)