BentoML up to 1.4.36 bentofile.yaml system_packages docker.system_packages code injection

Summaryinfo

A vulnerability identified as critical has been detected in BentoML up to 1.4.36. The impacted element is the function system_packages of the file bentofile.yaml. The manipulation of the argument docker.system_packages leads to code injection. This vulnerability is traded as CVE-2026-33744. An attack has to be approached locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in BentoML up to 1.4.36. It has been rated as critical. This issue affects the function system_packages of the file bentofile.yaml. The manipulation of the argument docker.system_packages with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.37, the `docker.system_packages` field in `bentofile.yaml` accepts arbitrary strings that are interpolated directly into Dockerfile `RUN` commands without sanitization. Since `system_packages` is semantically a list of OS package names (data), users do not expect values to be interpreted as shell commands. A malicious `bentofile.yaml` achieves arbitrary command execution during `bentoml containerize` / `docker build`. Version 1.4.37 fixes the issue.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-33744 since 03/23/2026. The exploitation is known to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 304266 (BentoML < 1.4.37 Command Injection (GHSA-jfjg-vc52-wqvf)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.4.37 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (304266). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• BentoML

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7
• 1.4.8
• 1.4.9
• 1.4.10
• 1.4.11
• 1.4.12
• 1.4.13
• 1.4.14
• 1.4.15
• 1.4.16
• 1.4.17
• 1.4.18
• 1.4.19
• 1.4.20
• 1.4.21
• 1.4.22
• 1.4.23
• 1.4.24
• 1.4.25
• 1.4.26
• 1.4.27
• 1.4.28
• 1.4.29
• 1.4.30
• 1.4.31
• 1.4.32
• 1.4.33
• 1.4.34
• 1.4.35
• 1.4.36

Website

• Product: https://github.com/bentoml/BentoML/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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