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Tool Directory

CVE-2026-40217

HighPublished

LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.

Published: Apr 10, 2026
Updated: Jul 15, 2026
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

8.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

15.1%

Moderate · next 30 days

Percentile: 96.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.

Sources

CVE-2026-40217-PoCPoC
The code for personally reproducing the corresponding vulnerability
CVE-LiteLLMExploit
CVE-2026-47101, CVE-2026-47102, CVE-2026-40217

Responsible use

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