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Description

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.38, the cloud deployment path in src/bentoml/_internal/cloud/deployment.py was not included in the fix for CVE-2026-33744. Line 1648 interpolates system_packages directly into a shell command using an f-string without any quoting. The generated script is uploaded to BentoCloud as setup.sh and executed on the cloud build infrastructure during deployment, making this a remote code execution on the CI/CD tier. This vulnerability is fixed in 1.4.38.

PUBLISHED Reserved 2026-03-31 | Published 2026-04-06 | Updated 2026-04-07 | Assigner GitHub_M




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

< 1.4.38
affected

References

github.com/...entoML/security/advisories/GHSA-fgv4-6jr3-jgfw exploit

github.com/...entoML/security/advisories/GHSA-fgv4-6jr3-jgfw

cve.org (CVE-2026-35043)

nvd.nist.gov (CVE-2026-35043)

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