high8.8
CVE-2026-44345
BentoML Dockerfile command injection via docker.base_image (sister of pending GHSA-w2pm-x38x-jp44 / CVE-2026-33744 / CVE-2026-35043)
Impact
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.39, src/bentoml/_internal/container/frontend/dockerfile/templates/base_v2.j2 interpolates docker.base_image raw with no escaping, newline filtering, or validation. A malicious bento.yaml with a multi-line docker.base_image value smuggles arbitrary Dockerfile directives into the generated Dockerfile, and bentoml containerize then runs docker build which executes the injected RUN directives on the victim host. This vulnerability is fixed in 1.4.39.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | bentoml | <= 1.4.38 | 1.4.39 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Bentoml | Bentoml | before 1.4.39 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-78f9-r8mh-4xm2
- https://github.com/bentoml/BentoML/security/advisories/GHSA-78f9-r8mh-4xm2
- https://github.com/bentoml/BentoML/security/advisories/GHSA-w2pm-x38x-jp44
- https://nvd.nist.gov/vuln/detail/CVE-2026-44345
- https://github.com/pypa/advisory-database/tree/main/vulns/bentoml/PYSEC-2026-189.yaml