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KO
CRITICAL 9.8

PYSEC-2026-296

Insecure deserialization in BentoML

Details

An insecure deserialization vulnerability exists in the BentoML framework, allowing remote code execution (RCE) by sending a specially crafted POST request. By exploiting this vulnerability, attackers can execute arbitrary commands on the server hosting the BentoML application. The vulnerability is triggered when a serialized object, crafted to execute OS commands upon deserialization, is sent to any valid BentoML endpoint. This issue poses a significant security risk, enabling attackers to compromise the server and potentially gain unauthorized access or control.

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Affected packages

PyPI / bentoml
Introduced in: 0 Fixed in: 1.2.5
Fix pip install --upgrade 'bentoml>=1.2.5'

References