CVE-2026-40217

LiteLLM: LiteLLM: Arbitrary Code Execution via bytecode rewriting

Published Apr 10, 2026 CVSS 3.1 · 8.8 High EPSS 17.0% KEV · Not listed
Description
LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-wxxx-gvqv-xp7p LiteLLM has a sandbox escape in custom-code guardrail
History
Type Values Removed Values Added
First Time appeared Litellm
Litellm litellm
CPEs cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*
Vendors & Products Litellm
Litellm litellm
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Remote Code Execution via Bytecode Rewriting on /guardrails/test_custom_code in LiteLLM LiteLLM: LiteLLM: Arbitrary Code Execution via bytecode rewriting
Weaknesses CWE-94
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
Title Remote Code Execution via Bytecode Rewriting on /guardrails/test_custom_code in LiteLLM
Type Values Removed Values Added
First Time appeared Berriai
Berriai litellm
Vendors & Products Berriai
Berriai litellm
Type Values Removed Values Added
Description LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI.
Weaknesses CWE-420
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 15, 2026, 1:01 AM
Reserved
Apr 10, 2026, 1:43 PM
Status
Modified
Published
Apr 10, 2026, 2:16 PM
Modified
Oct 26, 2026, 9:10 PM
Severity
Important
Public date
Apr 10, 2026, 1:43 PM