CRITICAL9.8
PYSEC-2026-295
BentoML deserialization vulnerability
Details
A deserialization vulnerability exists in BentoML's runner server in bentoml/bentoml versions <=1.3.4.post1. By setting specific parameters, an attacker can execute unauthorized arbitrary code on the server, causing severe harm. The vulnerability is triggered when the args-number parameter is greater than 1, leading to automatic deserialization and arbitrary code execution.
Are you affected?
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Affected packages
PyPI/bentoml
Introduced in:
0No fixed version published yet for bentoml (pip). Pin to a known-safe version or switch to an alternative.
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-9070[ADVISORY]
- https://github.com/bentoml/BentoML[PACKAGE]
- https://github.com/bentoml/BentoML/blob/a6f5f937be6ec278f3d4f3bbc6f3c8f9564820d7/src/bentoml/_internal/server/runner_app.py#L297[WEB]
- https://github.com/bentoml/BentoML/blob/v1.4.5/src/bentoml/_internal/server/runner_app.py#L301[WEB]
- https://huntr.com/bounties/7be6fc22-be18-44ee-a001-ac7158d5e1a5[WEB]
- https://pypi.org/project/bentoml[PACKAGE]
- https://github.com/advisories/GHSA-9g44-gwvm-hc44[ADVISORY]