How severe is CVE-2026-44345?

CVE-2026-44345 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-44345 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44345?

CVE-2026-44345 affects Bentoml. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44345?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-44345 have an EU (EUVD) identifier?

Yes. CVE-2026-44345 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32610.

When was CVE-2026-44345 published?

CVE-2026-44345 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-44345

CVE-2026-44345 is a high-severity vulnerability in Bentoml with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32610
Weakness: CWE-78
Affected product: Bentoml
Published: 2026-05-27
Last modified: 2026-06-17

Description

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 runs docker build which executes the injected RUN directives on the victim host. This vulnerability is fixed in 1.4.39.

Frequently asked questions

What is CVE-2026-44345?: 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 runs docker build which executes the injected RUN directives on the victim host. This vulnerability is fixed in 1.4.39.
How severe is CVE-2026-44345?: CVE-2026-44345 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-44345 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44345?: CVE-2026-44345 affects Bentoml. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44345?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-44345 have an EU (EUVD) identifier?: Yes. CVE-2026-44345 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32610.
When was CVE-2026-44345 published?: CVE-2026-44345 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://github.com/bentoml/BentoML/security/advisories/GHSA-78f9-r8mh-4xm2

Affected products (1)

cpe:2.3:a:bentoml:bentoml:*:*:*:*:*:*:*:*

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