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Vulnerability record · CVE-2026-40217 · published 10 April 2026

CVE-2026-40217: Litellm code injection vulnerability

Litellm · Litellm

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

8.8 CVSS 3.1 High EPSS 3.4% · top 11.6% CWE-420 · CWE-420CWE-94 · Code injection
8.8CVSS 3.1 base score
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 1 tagged exploit
15 Jul 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.x41-dsec.de/lab/advisories/x41-2026-001-litellm/ ExploitMitigationThird Party Advisory
https://access.redhat.com/errata/RHSA-2026:24866
https://access.redhat.com/errata/RHSA-2026:30056
https://access.redhat.com/security/cve/CVE-2026-40217
https://bugzilla.redhat.com/show_bug.cgi?id=2457301
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40217.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-40217), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.