High severity8.8GHSA Advisory· Published May 27, 2026· Updated Jun 2, 2026
CVE-2026-44345
CVE-2026-44345
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
bentomlPyPI | < 1.4.39 | 1.4.39 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/bentoml/BentoML/security/advisories/GHSA-78f9-r8mh-4xm2nvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-78f9-r8mh-4xm2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44345ghsaADVISORY
- github.com/bentoml/BentoML/security/advisories/GHSA-w2pm-x38x-jp44ghsaWEB
- github.com/pypa/advisory-database/tree/main/vulns/bentoml/PYSEC-2026-189.yamlghsaWEB
News mentions
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