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Description

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.39, a malicious bentofile.yaml containing a newline-injected value in envs[*].name produces unquoted RUN directives in the BentoML-generated Dockerfile. When the victim runs bentoml containerize on the imported bento, those RUN directives execute on the host during docker build. This vulnerability is fixed in 1.4.39.

PUBLISHED Reserved 2026-05-05 | Published 2026-05-27 | Updated 2026-05-28 | Assigner GitHub_M




HIGH: 8.8CVSS:3.1/AV:N/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')

CWE-94: Improper Control of Generation of Code ('Code Injection')

Product status

< 1.4.39
affected

References

github.com/...entoML/security/advisories/GHSA-w2pm-x38x-jp44 exploit

github.com/...entoML/security/advisories/GHSA-w2pm-x38x-jp44

cve.org (CVE-2026-44346)

nvd.nist.gov (CVE-2026-44346)

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