CVE-2026-40217NVD

Vulnerability Summary

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

Severity Level

HIGH(8.8)

Published Date

Apr 10, 2026

Last Modified

Oct 26, 2026

PoC

Available(Nuclei)

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

15.53%Probability

Root Weakness (CWE)

CWE-420: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CWE-94: Code Injection ↗

The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended syntax or behavior.

CVSS v3.1 Base Metrics — Score 8.8 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Litellm Litellm <= 2026-04-08

Patched Versions

Not provided by NVD for this CVE.

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