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CVE-2026-33744

Bentoml code injection

7.8 HIGHPublic exploitEPSS 0.25%
  1. Published27 Mar 2026

Description

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.37, the `docker.system_packages` field in `bentofile.yaml` accepts arbitrary strings that are interpolated directly into Dockerfile `RUN` commands without sanitization. Since `system_packages` is semantically a list of OS package names (data), users do not expect values to be interpreted as shell commands. A malicious `bentofile.yaml` achieves arbitrary command execution during `bentoml containerize` / `docker build`. Version 1.4.37 fixes the issue.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Bentoml< 1.4.37

Remediation

Fixed in
Bentoml≥ 1.4.37

References

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Frequently asked

Is CVE-2026-33744 being actively exploited?

CVE-2026-33744 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.25%.

How severe is CVE-2026-33744?

CVE-2026-33744 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.25% probability of exploitation.

Which products are affected by CVE-2026-33744?

Affected products include Bentoml.

How do I fix CVE-2026-33744?

Upgrade affected software to a fixed version, for example Bentoml 1.4.37 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-33744 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.