Vulnerability · Published May 27, 2026 · Assigned by GitHub_M
CVE-2026-44346BentoML: Dockerfile command injection via envs[*].name in bentofile.yaml
High 8.8
In plain English
A high-severity OS command injection in BentoML from bentoml. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | bentoml | 1.4.39 | GHSA-w2pm-x38x-jp44 |
| PyPI | bentoml | 1.4.39 | PYSEC-2026-190 |
Affected products (as reported)
Weakness: CWE-78, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/bentoml/BentoML/security/advisories/GHSA-w2pm-x38x-jp44 x_refsource_CONFIRM