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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| bentoml | BentoML | <= 1.4.39 |
References
- https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/bento/build_config.py
- https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/__init__.py
- https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/frontend/dockerfile/templates/base.j2
- https://github.com/bentoml/BentoML/blob/v1.4.39/src/bentoml/_internal/container/generate.py
- https://github.com/geo-chen/oss/blob/main/BentoML.md
- https://www.vulncheck.com/advisories/bentoml-through-1.4.39-dockerfile-instruction-injection-via-docker-env-keys
- https://github.com/geo-chen/oss/blob/main/BentoML.md
Timeline
- Published
- Oct 19, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Awaiting Analysis