CVE-2026-24123

High

Description

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to version 1.4.34, BentoML's `bentofile.yaml` configuration allows path traversal attacks through multiple file path fields (`description`, `docker.setup_script`, `docker.dockerfile_template`, `conda.environment_yml`). An attacker can craft a malicious bentofile that, when built by a victim, exfiltrates arbitrary files from the filesystem into the bento archive. This enables supply chain attacks where sensitive files (SSH keys, credentials, environment variables) are silently embedded in bentos and exposed when pushed to registries or deployed. Version 1.4.34 contains a patch for the issue.

SeverityHigh
CVSS7.4
Exploit probability—
ProductBentoml
PublishedJan 26, 2026
First seenJan 26, 2026

How to fix

Update
  • bentoml bentoml1.4.34 or later
  • bentoml1.4.34 or later

Affected products

ProductAffected versionsFixed in
bentoml bentomlv < 1.4.341.4.34
bentomlPyPIv < 1.4.341.4.34

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