CVE-2026-35043: BentoML: Command Injection in cloud deployment setup script

April 3, 2026 (updated April 6, 2026)

Commit ce53491 (March 24) fixed command injection via system_packages in Dockerfile templates and images.py by adding shlex.quote. However, the cloud deployment path in src/bentoml/_internal/cloud/deployment.py was not included in the fix. Line 1648 interpolates system_packages directly into a shell command using an f-string without any quoting.

The generated script is uploaded to BentoCloud as setup.sh and executed on the cloud build infrastructure during deployment, making this a remote code execution on the CI/CD tier.

References

github.com/advisories/GHSA-fgv4-6jr3-jgfw
github.com/bentoml/BentoML
github.com/bentoml/BentoML/security/advisories/GHSA-fgv4-6jr3-jgfw
nvd.nist.gov/vuln/detail/CVE-2026-33744
nvd.nist.gov/vuln/detail/CVE-2026-35043

Code Behaviors & Features

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