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TI-2026-27246 Aliases CVE-2026-35043GHSA-fgv4-6jr3-jgfw

BentoML: command injection in cloud deployment setup script (deployment.py)

Priority HIGH 69CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00321 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed BentoML (bentoml): 1.4.38bentoml (PyPI): 1.4.38

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
bentomlBentoMLbefore 1.4.381.4.38Patch availableCNA
—bentoml (PyPI)before 1.4.381.4.38Patch availableGHSA-fgv4-6jr3-jgfw
  • BentoML Vendorbentoml Affected before 1.4.38 Fixed in 1.4.38 Patch available CNA
  • bentoml (PyPI) Vendor— Affected before 1.4.38 Fixed in 1.4.38 Patch available GHSA-fgv4-6jr3-jgfw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:bentoml:bentoml:*:*:*:*:*:*:*:*before 1.4.38Vulnerablebentoml
  • cpe:2.3:a:bentoml:bentoml:*:*:*:*:*:*:*:* Versions before 1.4.38 Vulnerable ·bentoml

Remediation

  • Fix · CNA BentoML (bentoml) Fixed in 1.4.38
  • Fix · GHSA-fgv4-6jr3-jgfw bentoml (PyPI) Fixed in 1.4.38 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35043
  2. 2026-10-03 Alias added: GHSA-fgv4-6jr3-jgfw

References

Exploit 1

Advisory 2

Other 2

  • TI-2025-34190 BentoML is Vulnerable to an SSRF Attack Through File Upload Processing CVSS 3.1CRITICAL 9.9
  • TI-2025-23454 Insecure Deserialization leads to RCE in BentoML's runner server CVSS 3.1CRITICAL 9.8
  • TI-2025-20352 BentoML Allows Remote Code Execution (RCE) via Insecure Deserialization CVSS 3.1CRITICAL 9.8
  • TI-2026-27247 BentoML has a Server-Side Template Injection via unsandboxed Jinja2 Environment in Dockerfile generation CVSS 3.1CRITICAL 9.6
  • TI-2026-32312 BentoML: Dockerfile command injection via envs[*].name in bentofile.yaml CVSS 3.1HIGH 8.8
  • TI-2026-32311 BentoML: Dockerfile command injection via docker.base_image CVSS 3.1HIGH 8.8
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences