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High

BentoML Denial of Service (DoS) via Multipart Boundary

  • Disclosed: 20.03.2025
  • Updated: 11.10.2026 13:18

BentoML version v1.3.4post1 is vulnerable to a Denial of Service (DoS) attack. The vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. This causes the server to continuously process each character, leading to excessive resource consumption and rendering the service unavailable. The issue is unauthenticated and does not require any user interaction, impacting all users of the service.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) bentoml <= 1.4.5 no fix

References

CVSS score 7.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-400, CWE-770
Platform
Python (PyPI)
Package
bentoml
Disclosed
20.03.2025
Updated
11.10.2026 13:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-1219 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-hw8j-hw49-752c - CC BY 4.0

Vulnerability history: bentoml

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (17) in the archive
Total entries
17
First → latest
04.2024 07.2026
Without a fix
5
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 10
  • Medium 2

Disclosures per year

Severity:
  1. A vulnerability was found in bentoml OpenLLM 0.6.30. This affects the function async_run_command of the file src/openllm/common.py of the component Model Repository Directory Name Handler. Performing
    High · 7.8 CVE-2026-15035 <= 0.6.30 no fix
  2. Dockerfile command injection via envs[*].name in bentofile.yaml (sibling fix-bypass of CVE-2026-33744 and CVE-2026-35043)
    High · 8.8 CVE-2026-44346 < 1.4.39 1.4.39
  3. BentoML Dockerfile command injection via docker.base_image (sister of pending GHSA-w2pm-x38x-jp44 / CVE-2026-33744 / CVE-2026-35043)
    High · 8.8 CVE-2026-44345 < 1.4.39 1.4.39
  4. BentoML: SSTI via Unsandboxed Jinja2 in Dockerfile Generation
    High · 8.8 CVE-2026-35044 < 1.4.38 1.4.38
  5. BentoML: Command Injection in cloud deployment setup script
    High · 7.8 CVE-2026-35043 < 1.4.38 1.4.38
  6. BentoML has Dockerfile Command Injection via system_packages in bentofile.yaml
    High · 7.8 CVE-2026-33744 < 1.4.37 1.4.37
  7. BentoML Vulnerable to Arbitrary File Write via Symlink Path Traversal in Tar Extraction
    High CVE-2026-27905 < 1.4.36 1.4.36
  8. BentoML has a Path Traversal via Bentofile Configuration
    High · 7.4 CVE-2026-24123 < 1.4.34 1.4.34
  9. BentoML SSRF Vulnerability in File Upload Processing
    Critical · 9.9 CVE-2025-54381 >= 1.4.0, < 1.4.19 1.4.19
  10. BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.8, there was an insecure deserialization in BentoML's runner server. By setting
    Critical · 9.8 CVE-2025-32375 >= 1.0.0, < 1.4.8 1.4.8
  11. BentoML Allows Remote Code Execution (RCE) via Insecure Deserialization
    Critical · 9.8 CVE-2025-27520 >= 1.3.4, < 1.4.3 1.4.3
  12. BentoML Denial of Service (DoS) via Multipart Boundary this entry
    High · 7.5 CVE-2024-9056 <= 1.4.5 no fix
  13. BentoML deserialization vulnerability
    Critical · 9.8 CVE-2024-9070 <= 1.4.5 no fix
  14. BentoML vulnerable to Uncontrolled Resource Consumption
    High · 7.5 ghsa-hh3j-9m59-p8vc <= 1.3.9 no fix
  15. Insecure deserialization in BentoML
    Critical · 9.8 CVE-2024-2912 < 1.2.5 1.2.5

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