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CVE-2025-27520: BentoML Allows Remote Code Execution (RCE) via Insecure Deserialization

April 4, 2025 (updated October 27, 2026)

A Remote Code Execution (RCE) vulnerability caused by insecure deserialization has been identified in the latest version(v1.4.2) of BentoML. It allows any unauthenticated user to execute arbitrary code on the server.

References

  • github.com/advisories/GHSA-33xw-247w-6hmc
  • github.com/bentoml/BentoML/commit/b35f4f4fcc53a8c3fe8ed9c18a013fe0a728e194
  • github.com/bentoml/BentoML/security/advisories/GHSA-33xw-247w-6hmc
  • github.com/pypa/advisory-database/tree/main/vulns/bentoml/PYSEC-2026-294.yaml
  • nvd.nist.gov/vuln/detail/CVE-2025-27520
  • pypi.org/project/bentoml

Code Behaviors & Features

Detect and mitigate CVE-2025-27520 with GitLab Dependency Scanning

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Affected versions

All versions starting from 1.3.4 before 1.4.3

Fixed versions

  • 1.4.3

Solution

Upgrade to version 1.4.3 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-502: Deserialization of Untrusted Data

Source file

pypi/bentoml/CVE-2025-27520.yml

Spotted a mistake? Edit the file on GitLab.

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