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CVE-2026-40217

Published: Apr 10, 2026Updated: Apr 27, 2026 Sources: CVE List NVDCWE-420
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.7%
Top 51.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

Description

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

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-420

Affected Products

LiteLLMBerriAI
SaaS
AI / ML / llm-serving-inference
litellmlitellm
Mixed
AI / ML / llm-serving-inference
berriaicommercialAI / MLaka litellm, berriai/litellm
litellmoss-projectAI / ML

Exploitability

Workaround Available

References

https://www.x41-dsec.de/lab/advisories/x41-2026-001-litellm/
x41-dsec.de

Timeline

Published
Apr 10, 2026
Last Updated
Apr 27, 2026
News mentions
2

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