CVE-2026-112264BentoML through 1.4.39 Dockerfile Instruction Injection via docker.env Keys

Description

BentoML through 1.4.39 contains a Dockerfile instruction injection vulnerability that allows attackers to add arbitrary build instructions by embedding newlines in docker.env mapping keys rendered by the legacy base.j2 template. Attackers can supply a crafted bentofile.yaml or imported bento archive so that bentoml containerize executes injected RUN instructions during docker build, accessing build secrets and poisoning images.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/geo-chen/oss/blob/main/BentoML.md third-party-advisory
• https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/frontend/dockerfile/templates… technical-description
• https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/bento/build_config.py technical-description
• https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/generate.py technical-description
• https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/__init__.py technical-description
• VulnCheck Advisory: BentoML through 1.4.39 Dockerfile Instruction Injection via docker.env Keys third-party-advisory