CVE-2026-44345: BentoML is a Python library for building online serving systems optimized for AI apps and model inference

Q: How do I fix CVE-2026-44345?

bentoml: upgrade to 1.4.39. Exact commands for each OS are on this page.

Q: Is CVE-2026-44345 being exploited?

CVE-2026-44345 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44345 affect?

CVE-2026-44345 affects bentoml. Severity is high (CVSS 8.8). BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.39, src/bentoml/_internal/container/frontend/dockerfile/templates/base_v2.j2 interpolates docker.base_image raw with no

Q: How urgent is CVE-2026-44345?

Priority 42/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2026-44345 is a high-severity flaw (CVSS 8.8) affecting bentoml. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.39, src/bentoml/_internal/container/frontend/dockerfile/templates/base_v2.j2 interpolates docker.base_image raw with no escaping, newline filtering, or validation. A malicious bento.yaml with a multi-line docker.base_image value smuggles arbitrary Dockerfile directives into the generated Dockerfile, and bentoml containerize then

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-05-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: bentoml

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-27 18:16 UTCPublished CVE record published
2026-06-17 10:50 UTCUpdated Record last modified

bentoml bentoml UPGRADE

Affected: < 1.4.39

Fixed in: 1.4.39

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy bentoml || rpm -q bentoml || bentoml --version

2. UPGRADE to 1.4.39 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bentoml

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bentoml

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44345?

bentoml: upgrade to 1.4.39. Exact commands for each OS are on this page.

Is CVE-2026-44345 being exploited?

CVE-2026-44345 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44345 affect?

CVE-2026-44345 affects bentoml. Severity is high (CVSS 8.8). BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.39, src/bentoml/_internal/container/frontend/dockerfile/templates/base_v2.j2 interpolates docker.base_image raw with no

How urgent is CVE-2026-44345?

Priority 42/100. High severity; Public exploit reference

Software pages

Python vulnerabilities · Docker vulnerabilities

Related CVEs

CVE-2026-35044 HIGH 8.8 UPGRADE BentoML is a Python library for building online serving systems optimized for AI apps and model inference
CVE-2026-35043 HIGH 7.8 UPGRADE BentoML is a Python library for building online serving systems optimized for AI apps and model inference
CVE-2026-40610 MEDIUM 5.5 UPGRADE BentoML is a Python library for building online serving systems optimized for AI apps and model inference
CVE-2026-44346 HIGH 8.8 UPGRADE BentoML is a Python library for building online serving systems optimized for AI apps and model inference

References

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