BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.38, the cloud deployment path in src/bentoml/_internal/cloud/deployment.py was not included in the fix for CVE-2026-33744. 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. This vulnerability is fixed in 1.4.38.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/bentoml/BentoML/security/advisories/GHSA-fgv4-6jr3-jgfw Exploit, Vendor Advisory
- https://github.com/bentoml/BentoML/security/advisories/GHSA-fgv4-6jr3-jgfw Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · bentomlNVD modified 2026-10-23 23:10
Affected (CPE criteria) 1
cpe:2.3:a:bentoml:bentoml:*:*:*:*:*:*:*:*
References 2
- https://github.com/bentoml/BentoML/security/advisories/GHSA-fgv4-6jr3-jgfw Exploit, Vendor Advisory
- https://github.com/bentoml/BentoML/security/advisories/GHSA-fgv4-6jr3-jgfw Exploit, Vendor Advisory