# CVE-2025-32375: BentoML's runner server Vulnerable to Remote Code Execution (RCE) via Insecure Deserialization

Source: https://junglewise.ai/threats/cve-2025-32375-bentoml-s-runner-server-vulnerable-to-remote-code-execution-rce  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-04-09  
License: CC BY 4.0 with a link back

CVE-2025-32375 · Severity: low · CVSS 3.1 · Published 2025-04-09

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.8, there was an insecure deserialization in BentoML's runner server. By setting specific headers and parameters in the POST request, it is possible to execute any unauthorized arbitrary code on the server, which will grant the attackers to have the initial access and information disclosure on the server. This vulnerability is fixed in 1.4.8.

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

## Quick answers

**Is CVE-2025-32375 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-32375 being exploited in the wild.

**How severe is CVE-2025-32375?** Low severity, with a CVSS score of 3.1, published 9 April 2025.

**Which products and versions are affected?** bentoml (PyPI) ECOSYSTEM:introduced=1.0.0,fixed=1.4.8, ECOSYSTEM:introduced=1.0.0a1,fixed=1.4.8.

**Is there a fix for CVE-2025-32375?** Yes. bentoml (PyPI): upgrade to 1.4.8 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-32375?** Check whether you run bentoml (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

- bentoml (PyPI): upgrade to 1.4.8 or later

  ```sh
  pip install "bentoml>=1.4.8"
  ```


## Affected products

- bentoml (PyPI) ECOSYSTEM:introduced=1.0.0,fixed=1.4.8, ECOSYSTEM:introduced=1.0.0a1,fixed=1.4.8

## Identifiers

- CVE-2025-32375
- GHSA-7v4r-c989-xh26
- PYSEC-2025-32

## Related threats

- [bentoml OpenLLM command injection in Model Repository Directory Name Handler](https://junglewise.ai/threats/cve-2026-15035-bentoml-openllm-command-injection-in-model-repository-directory)
- [PYSEC-2026-1218 - BentoML has a Path Traversal via Bentofile Configuration](https://junglewise.ai/threats/cve-2026-24123-bentoml-has-a-path-traversal-via-bentofile-configuration)
- [PYSEC-2026-1219 - BentoML Denial of Service (DoS) via Multipart Boundary](https://junglewise.ai/threats/cve-2024-9056-bentoml-denial-of-service-dos-via-multipart-boundary)
- [BentoML command injection in Dockerfile generation via bentofile.yaml](https://junglewise.ai/threats/cve-2026-44346-bentoml-command-injection-in-dockerfile-generation-via-bentofile)
- [BentoML command injection in Dockerfile base_image template](https://junglewise.ai/threats/cve-2026-44345-bentoml-command-injection-in-dockerfile-base-image-template)